Knowledge check.

- Choose one best answer from given 4 choices for each questions.
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Question Number 1

Give the output of the following code snippet :

struct
{
    char *name;
    union
    {
        char *sval;
    } u[5];
} symtab[10];
void main()
{
    symtab[0].u[0].sval="HelloWorld";
    printf("%s",symtab[0].u[0].sval);
}

HelloWorld

Hello

Compilation error

Runtime error

Question Number 2

Give the output of the following code snippet :

struct stud
{
    int no;
    int no2;
    stud *next;
};
void main()
{
    struct stud s;
    struct stud *temp=(stud*)malloc(sizeof(stud));
    temp->next=NULL;
    s.no=1001;
    printf("%d",sizeof(temp));
}

Question Number 3

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
void func()
{
    int value = 200;
    printf ( "Output = %d\n", value );

}
/* Test1.c */

void func();


/* Test2.c */
#include"Test1.h"

static int value = 100;
void main ()
{
    func();
    printf ( "Output = %d\n", value );
}

Output = 100 Output = 200

Output = 200 Output = 100

Compilation error : Redefinition of value.

Linker error : Redefinition of value.

Question Number 4

Give the output of the following code snippet :

void disp(int num,...);
int func();
void main()
{
    int (*ptr)();
    ptr=func;
    disp("Test",ptr);
}
void disp(int num,...)
{
    int (*pfun)();
    va_list ptr;
    typedef int(*funcptr)();
    va_start(ptr,num);
    pfun=va_arg(ptr,funcptr);
    (*pfun)();
}
int func()
{
    printf("Hello World");
    return 0;
}

Hello World

Hello

No output

Compilation error

Question Number 5

Give the output of the following code snippet :

void main()
{
    int row=2,col=2;
    int *arr;
    int i,j;
    arr=(int*)malloc(2*2*sizeof(int));
    for(i=0; i< row; i++)
    {
        for(j=0; j< col; j++)
        {
            arr[i*col+j]=i*i;
            printf("%d ",arr[i*col+j]);
        }
    }

}

0 0 1 1

0 1 2 3

0 1 1 2

Compilation error

Question Number 6

Give the output of the following code snippet :

int main()
{
    int a = 0;
    int b = 0;
    int c = 0;
    _asm
    {
        mov eax, 10
        push eax
        push 100
        push 200
        push 300
        mov ebx, dword ptr[esp]
        mov a, ebx
        mov ebx, dword ptr[esp-4]
        mov b, ebx
        mov ebx, dword ptr[esp-8]
        mov c, ebx
        add esp, 0x10

    }
    printf( "%d %d %d",a,b,c);
}

300 200 100

100 200 100

100 Garbage value Garbage value

300 Garbage value Garbage value

Question Number 7

Give the output of the following code snippet :

struct node
{
    int data;
    struct node *next;
}*head=0;

void addtoLoc( int n,int num )
{
    struct node *temp2,*temp;
    temp2=head;
    if(temp2==NULL)
    {
        printf("Empty List");
        return;
    }
    for(int i=1; i< =n; i++)
    {
        temp2=temp2->next;
        if(temp2==NULL)
            return;
    }
    temp=(struct node *)malloc(sizeof(struct node));
    temp->data=num;
    temp->next=temp2->next;
    temp2->next=temp;
}

void  display()
{
    struct node *r;
    r=head;
    while(r!=NULL)
    {
        printf("%d ",r->data);
        r=r->next;
    }
}

void add( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->data=num;
    temp->next=head;
    head=temp;
}
void main()
{
    add(100);
    add(200);
    addtoLoc(0,400);
    addtoLoc(4,300);
    display();
}

200 400 100

100 400 200

200 100 400

100 200 300

Question Number 8

Give the output of the following code snippet :

int main()
{
    int a = 20;
    int b = 20;

    if ((a >> 1) == (a / 2))
        printf("True ");
    else
        printf("False");
}

True

False

Compilation error

Runtime error

Question Number 9

Give the output of the following code snippet :

int main()
{
    int a = 10;
    int b = 20;
    int c = 30;
    _asm
    {
        push eax
        push a
        push b
        mov ebx, dword ptr[esp]
        mov a, ebx
        pop b
        pop eax
        mov ebx, dword ptr[esp+4]
        mov b,ebx
        add esp, 0x10

    }
    printf( "%d %d",a,b);
}

30 20

10 20

20 0

30 0

Question Number 10

Give the output of the following code snippet :

int main()
{
    float x=0.3,y=10.89,z=20.68;
    if( x == 0.3)
        printf("%.0f",fmod(z,y));
    else
        printf("%.0f",fmod(y,z));
}

9.00

10.89

10.79

Question Number 11

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void SortList()
{
    node *temp1,*temp2,*temp3,*temp4,*temp5;
    temp4=NULL;
    while(temp4!=Head->next)
    {
        temp3=temp1=Head;
        temp2=temp1->next;
        while(temp1!=temp4)
        {
            if(temp1->x > temp2->x)
            {
                if(temp1==Head)
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    Head = temp2;
                    temp3=temp2;
                }
                else
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    temp3->next = temp2;
                    temp3=temp2;
                }
            }
            else
            {
                temp3=temp1;
                temp1=temp1->next;
            }
            temp2=temp1->next;
            if(temp2 == temp4)
                temp4=temp1;
        }
    }
}
void AddNode( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->x=num;
    temp->next=Head;
    Head=temp;

}
void  Display()
{
    struct node *r;
    r=Head;
    while(r!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    AddNode(20);
    SortList();
    Display();
}

5 6 10 20

20 10 6 5

No output

Compilation error

Question Number 12

Give the output of the following code snippet :

typedef struct stud *s;
void func(struct stud *stuobj);
struct stud
{
    int no;
    int no2;
    s link;
};

void main()
{
    struct stud s= {1001,1002};
    func(&s);
}
void func(struct stud *stuobj)
{
    struct stud *s;
    s=stuobj;
    printf("%d",s->no);
}

1001

No output

Compilation error

Garbage value

Question Number 13

Give the output of the following code snippet :

int main()
{
    int a = 10, b = 20,c=5;
    _asm
    {
        inc dword ptr[a]
        mov eax,dword ptr[a]
        dec dword ptr[b]
        mov ebx,dword ptr[b]
        mov ecx,10
        and ecx,ebx
        mov dword ptr[c],ecx

    }
    printf("%d",c);
}

Question Number 14

Give the output of the following code snippet :

int main()
{
    int a,b,c=20;
    _asm
    {
        mov dword ptr[a],15
        mov dword ptr[b],10
        or ebx,dword ptr[c]
        mov eax,dword ptr[c]
        xor ebx,eax
        inc ebx
        mov a,ebx
    }
    printf("%d",a);
}

Question Number 15

Give the output of the following code snippet :

void disp(int num,...)
{
    print(num,...);
}
void print(int num,...)
{
    int i,k;
    float j;
    va_list marker;
    va_start(marker,num);
    j=va_arg(marker,double);
    printf("%.2f ",j);
    va_end(marker);
}
int main(int argc, char *argv[])
{
    print(1,2.2,3.3,4.4);
}

2.00 3.30 4.40

3.30 4.40

0.00

Compilation error

Question Number 16

Give the output of the following code snippet :

union student
{
    int rollno;
    char *name;
};
int main()
{
    union student stud[5];
    stud[0].name = "Jenn";
    stud[1].rollno = 101;
    printf("%s\n", stud[1].name);
}

Jenn

Compilation error

Runtime error

Garbage value

Question Number 17

Give the output of the following code snippet :

void f(char *k)
{

    k[2] = 'm';
    printf("%s\n", k);
}
void main()
{
    char s[] = "hello";
    f(s);
}

hello

helmo

hemlo

Segmentation fault

Question Number 18

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void SortList()
{
    node *temp1,*temp2,*temp3,*temp4,*temp5;
    temp4=NULL;
    while(temp4!=Head->next)
    {
        temp3=temp1=Head;
        temp2=temp1->next;
        while(temp1!=temp4)
        {
            if(temp1->x > temp2->x)
            {
                if(temp1==Head)
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    Head = temp2;
                    temp3=temp2;
                }
                else
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    temp3->next = temp2;
                    temp3=temp2;
                }
            }
            else
            {
                temp3=temp1;
                temp1=temp1->next;
            }
            temp2=temp1->next;
            if(temp2 == temp4)
                temp4=temp1;
        }
    }
}
void AddNode( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->x=num;
    temp->next=Head;
    Head=temp;
}
void  Display()
{
    struct node *r;
    r=Head;
    while(r!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
    printf("\n");
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    AddNode(20);
    AddNode(3);
    Display();
    SortList();
    Display();

}

10 5 6 20 3
3 5 6 10 20

3 20 6 5 10
3 5 6 10 20

No output

Compilation error

Question Number 19

Give the output of the following code snippet :

int main()
{
    int i, *j, k;
    _asm
    {
        mov         dword ptr[i], 0Fh
        lea         eax, [i]
        mov         dword ptr[j], eax
        mov         ecx, dword ptr[j]
        mov         eax, dword ptr[i]
        sub        eax, dword ptr[ecx]
        mov         ecx, dword ptr[j]
        cdq
        imul        dword ptr[ecx]
        add        eax, dword ptr[i]
        mov         dword ptr[k], eax
    }
    printf("%d\n", k);
    return 0;
}

Question Number 20

Give the output of the following code snippet :

void main()
{
    int i, sum = 0, j = 5;
    _asm
    {
        mov         dword ptr[i], 0
        jmp         Label1
        Label4 : mov         eax, dword ptr[i]
        add         eax, 1
        mov         dword ptr[i], eax
        Label1 : cmp         dword ptr[i], 5
        jge         Label2

        cmp         dword ptr[i], 3
        jne         Label3

        jmp         Label2

        Label3 : mov         ecx, dword ptr[i]
        imul        ecx, dword ptr[j]
        add         ecx, dword ptr[sum]
        mov         dword ptr[sum], ecx

        jmp         Label4

    }
Label2:	printf("%d", sum);
}

Question Number 21

Give the output of the following code snippet :

void main()
{
    typedef long int lint;
    typedef lint l;
    l a,b;
    lint c;
    a=100,b=200;
    c=a+b;
    printf("%d %d",b,a);
}

100 200

200 100

Garbage value

Compilation error

Question Number 22

Files Test1.c, Test1.h, Test2.c, Test2.h and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
void func1(int);
extern int arg = 10;


/* Test2.h */
extern int value;
void func(int);

/* Test1.c */

#include"Test2.h"
void func1(int);
void func(int arg)
{
    func1(arg);
    value = 200;
    printf("Output = %d\n",arg+value);
}

/* Test2.c */
#include"Test2.h"

void func1(int arg)
{
    printf ( "Output = %d\n", arg+value );

}



/* Test3.c */

#include "Test1.h"
#include "Test2.h"

int value = 300;
void main ()
{
    func1(arg);

}

Output = 310

Output = 210 Output = 310

Compilation error : Multiple initialization.

Linker error : Unresolved external symbol found.

Question Number 23

Give the output of the following code snippet :

int main()
{
    int *p = (int *)10;
    int *q = (int *)6;
    printf("%d", p % q);
}

Compilation error.

Question Number 24

Give the output of the following code snippet :

struct student
{
    char *c;
};
void main()
{
    struct student m;
    struct student *s = &m;
    s->c = "SourceLens";
    printf("%s", m.c);
}

SourceLens

GarbageValue

Null

Compilation error

Question Number 25

Give the output of the following code snippet :

int main()
{
    struct Temp
    {
        int one:2;
    };
    struct Temp var = {1};
    printf("%d\n", var.one);
    return 0;
}

-1

Compilation error

Question Number 26

Give the output of the following code snippet :

struct node
{
    int data;
    struct node *next;
    struct node *prev;
}*head;

void func( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->data=num;
    temp->next=head;
    temp->prev=NULL;
    while(head!=NULL)
        head=head->next;
    head=temp;


}

void  display()
{
    struct node *r;
    r=head->next;
    while(r!=NULL)
    {
        printf("%d ",r->data);
    }
}

void main()
{
    func(100);
    func(200);
    func(300);
    func(400);
    display();
}

400 300 200

300 200 100

100 200 300

Infinite loop

Question Number 27

Give the output of the following code snippet :

struct q
{
    char *name;
    struct q *next;
};
struct q *ptrary[10];
int main()
{
    struct q *p;
    p->name = "Hello";
    ptrary[0] = &p;
    printf("%s\n", p->name);
    return 0;
}

Hello

Garbage Value

Null

Compilation error

Question Number 28

Give the output of the following code snippet :

int main()
{
    float x=0.3,y=10.89,z=20.68;
    if( x > 0.3)
        printf("%.2f",fmod(z,y));
    else
        printf("%.2f",fmod(y,z));
}

9.00

9.79

10.79

Question Number 29

Give the output of the following code snippet :

struct student
{
    char *c;
    struct student point;
};
void main()
{
    struct student s;
    struct student m;
    s.c = m.c = "Hello";
    m.point = &s;
    (m.point)->c = "World";
    printf("%s %s", s.c, m.c);
}

Hello Hello

Hello World

World Hello

Compilation error

Question Number 30

Give the output of the following code snippet :

void main()
{
    int (*a)[2] = {1, 2, 3, 0};
    for (int i = 0; i <  2; i++)
        for (int j = 0; j <  2; j++)
            printf("%d ", **a);
}

1 2 3 4

1 0 0 0

1 1 1 1

Compilation error

Question Number 31

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void ReverseList()
{
    node *temp1,*temp2,*temp3;
    temp1=Head;
    temp2=NULL;
    while(temp1!=NULL)
    {
        temp3=temp2;
        temp2=temp1;
        temp1=temp1->next;
        temp2->next=temp3;
    }
    Head=temp2;
}
void AddNode( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->x=num;
    temp->next=Head;
    Head=temp;

}
void  Display()
{
    struct node *r;
    r=Head->next;
    while(r!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
    printf("\n");
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    AddNode(100);
    AddNode(200);
    ReverseList();
    Display();
}

5 6 100 200

100 5 6 10

200 100 10 5 6

Compilation error

Question Number 32

Give the output of the following code snippet :

void main()
{
    int i, sum = 0;
    _asm
    {
        mov         dword ptr[i], 0
        jmp         Label1
        Label3 : mov         eax, dword ptr[i]
        add         eax, 1
        mov         dword ptr[i], eax
        Label1 : cmp         dword ptr[i], 3
        jge         Label2

        mov         ecx, dword ptr[i]
        imul        ecx, dword ptr[i]
        add         ecx, dword ptr[sum]
        mov         dword ptr[sum], ecx

        jmp         Label3

    }
Label2:	printf("%d", sum);
}

Question Number 33

Consider the given lines of code : When is the else{} part of the code executed?

void add( int num )
{
    struct node *temp,*temp2;
    if (head== NULL)
    {
        temp=(struct node *)malloc(sizeof(struct node));
        temp->data=num;
        temp->next=NULL;
        head=temp;
    }
    else
    {
        temp=head;
        while (temp->next!=NULL)
            temp=temp->next;
        temp2=(struct node *)malloc(sizeof(struct node));
        temp2->data=num;
        temp2->next=NULL;
        temp->next=temp2;
    }

}

When the linked list is not empty

When the linked list is empty.

When the linked list is full.

None of the above

Question Number 34

Give the output of the following code snippet

int main()
{
    void *p;
    int a[4] = {1, 2, 3, 4};
    p = &a[3];
    int *ptr = &a[2];
    int n = p - ptr;
    printf("%d\n", n);
}

Compilation error

Question Number 35

Consider the given structure and state whether it is a self referencing structure :

struct node
{
    int x;
    int *next;
};

Always true

Always false

Sometimes true and sometimes false

Not enough information to provide a suitable answer

Question Number 36

Give the output of the following code snippet :

int main()
{
    int a = 20, b = 10,c=2;
    _asm
    {
        mov eax,esp
        mov ebx,100
        push dword ptr[a]
        push dword ptr[b]
        mov ecx,esp
        pop dword ptr[a]
        sub eax,ecx
        mov a,eax
        mov b,ebx
        mov c,ecx
        pop dword ptr[b]
    }
    printf("%d %d",b,c);
}

Garbage value 20

20 10

-8 10

20 Garbage value

Question Number 37

Give the output of the following code snippet :

void main()
{
    char *str="1001";
    char *str2="1002";
    int x;
    x=atoi(str)+atoi(str2);
    printf("%d",x);
}

1001

2003

2002

Compilation error

Question Number 38

Give the output of the following code snippet :

int main()
{
    int c=10;
    _asm
    {
        mov c,100
        add c,100
        mov c, eax
    }
    printf("%d", c);
}

200

Garbage value

Compilation error

Question Number 39

Give the output of the following code snippet :

struct point
{
    int x;
    int y;
};
void func(struct point*);
int main()
{
    struct point p1 = {1, 2};
    func(&p1);
    printf("%d\n", p1.x++);
}
void func(struct point *p)
{
    p->x = 10;
}

Compilation error

Question Number 40

Give the output of the following code snippet :

void main()
{
    int a = 5;
    _asm
    {
        mov         eax, dword ptr[a]
        mov         dword ptr[ebp - 0D0h], eax
        cmp         dword ptr[ebp - 0D0h], 5
        je          Label1
        cmp         dword ptr[ebp - 0D0h], 6
        je          Label2
        jmp         Label3

        Label1 : mov         eax, dword ptr[a]

        add         eax, 5
        mov         dword ptr[a], eax

        Label2 : mov         eax, dword ptr[a]
        add         eax, 0Ah
        mov         dword ptr[a], eax

    }
Label3:	printf("%d", a);
}

Question Number 41

Give the output of the following code snippet :

void main()
{
    enum days {MON=1,TUES,WED,THURS,FRI};
    enum val;
    for(int i=MON; i< FRI; i++)
    {
        printf("%d  ",i);
    }
}

0 1 2 3 4

0 1 2 3

1 2 3 4 5

1 2 3 4

Question Number 42

Give the output of the following code snippet :

void func(int i)
{
    void *j;
    j=&i;
    printf("%d",*(int*)j);
}
void main()
{
    int x=10;
    func(x);
}

Garbage value

Compilation error

Question Number 43

Give the output of the following code snippet :

int f()
{
    int*p;
    int x=100;
    p=&x;
    return *p;
}
void main()
{
    int *ptr;
    ptr=f();
    printf("%d",*ptr);
}

100

Address of ptr

Garbage value

Compilation error

Question Number 44

Give the output of the following code snippet :

void main()
{
    char str1[15]="Hello World";
    char str[10]="Yellow";
    char str2[10]="\0World";
    strcat(str,str2);
    printf("%d",strlen(str1));
}

Question Number 45

Give the output of the following code snippet :

int main()
{
    int a = 0;
    int b = 0;
    int c = 0;
    int d = 0;
    _asm
    {
        mov eax, 10
        push eax
        mov ebx, 20
        push ebx
        push 200
        push 100
        mov ecx, 30
        push ecx
        mov edx, 40
        push edx
        mov ebx, dword ptr[esp]
        mov a, ebx
        mov ebx, dword ptr[esp+4]
        mov b, ebx
        mov ebx, dword ptr[esp+8]
        mov c, ebx
        mov ebx, dword ptr[esp+12]
        mov d, ebx
        add esp, 0x10

    }
    printf( "%d %d %d %d", a, b, c, d );
}

100 200 20 10

100 200 40 30

40 30 100 200

40 30 20 10

Question Number 46

Give the output of the following code snippet :

void main()
{
    int a=10,c=50,b=30;
    _asm
    {
        mov eax,30
        mov ebx,a
        sub eax,dword ptr[b]
        jc Label2
        add eax,ebx
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        cmp eax,ecx
        jne Label1
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

10 50

20 30

20 10

10 10

Question Number 47

Give the output of the following code snippet with the following command line arguments : >Testfile.c one two three

/* Testfile.c */

int main(int argc, char *argv[])
{
    printf("%d %s", argc, argv[2]);
    return 0;
}

4 two

3 three

4 three

3 two

Question Number 48

Give the output of the following code snippet :

int main()
{
    int ary[4] = {1, 2, 3, 4};
    int *p = ary + 1;
    printf("%d\n", p[0]);
}

Compilation error

Question Number 49

Give the output of the following code snippet :

void func(struct stud stuobj)
{
    struct stud s;
    s=stuobj;
    printf("%d",s.no);
}
struct stud
{
    int no;
    int no2;
};

void main()
{
    struct stud s;
    s.no=1001;
    func(s);
}

1001

No output

Compilation error

Garbage value

Question Number 50

Give the output of the following code snippet :

void print(...)
{
    int i;
    va_list marker;
    va_start(marker,first);
    do
    {
        i=va_arg(marker,int);
        printf("%d ",i);
    }
    while(i!=6);
    va_end(marker);
}
int main(int argc, char *argv[])
{
    print("Test",2,4,'D',-1);
}

2 4 0

2 4 D -1

4 D -1

Compilation error

Question Number 51

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void SortList()
{
    node *temp1,*temp2,*temp3,*temp4,*temp5;
    temp4=NULL;
    while(temp4!=Head->next)
    {
        temp3=temp1=Head;
        temp2=temp1->next;
        while(temp1!=temp4)
        {
            if(temp1->x <  temp2->x)
            {
                if(temp1==Head)
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    Head = temp2;
                    temp3=temp2;
                }
                else
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    temp3->next = temp2;
                    temp3=temp2;
                }
            }
            else
            {
                temp3=temp1;
                temp1=temp1->next;
            }
            temp2=temp1->next;
            if(temp2 == temp4)
                temp4=temp1;
        }
    }
}
void AddNode( int num )
{
    struct node *temp,*temp2;
    if(Head==NULL)
    {
        temp2=(struct node *)malloc(sizeof(struct node));
        temp2->x=num;
        temp2->next=NULL;
        Head=temp2;
    }
    else
        temp=Head;
    while(temp->next!=NULL)
        temp=temp->next;
    temp2=(struct node *)malloc(sizeof(struct node));
    temp2->x=num;
    temp2->next=NULL;
    temp->next=temp2;
}

void  Display()
{
    struct node *r;
    r=Head->next;
    while(r!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
    printf("\n");
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    AddNode(20);
    AddNode(3);
    AddNode(100);
    AddNode(50);
    SortList();
    Display();
}

100 50 20 10 6 5 3

3 5 6 10 20 50 100

50 20 10 6 5 3

5 6 10 20 50 100

Question Number 52

Give the output of the following code snippet :

union Test
{
    char str[20];
};

int main()
{
    union Test st1, st2;
    strcpy(st1.str, "Hello");
    st2 = st1;
    st1.str[0] = 'J';
    printf("%s",st1.str);
}

Hello

Jello

Garbage value

Compilation error

Question Number 53

Give the output of the following code snippet :

int main()
{
    int *p = (int *)12;
    int *q = (int *)4;
    printf("%d", p - q);
}

Question Number 54

Give the output of the following code snippet :

int main()
{
    int x=100,y=100,z=200;
    int a= --z || ++y && x--;
    int c= ++x % --y;
    int b=(20,30,40)+a+(10,20,30,20)+c;
    printf("%d %d",b,c);
}

60 2

61 12

63 2

56 3

Question Number 55

Give the output of the following code snippet :

void main()
{
    char arry[10]="Hello";
    char str[15]="World";
    const char* ptr=str;
    *str='Y';
    printf("%s",str);
}

Hello

World

Yorld

Yello

Question Number 56

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */

int value = 100;
void func();

/* Test1.c */

void func()
{
    printf ( "Output = %d", value );

}

/* Test2.c */

#include"Test1.h"

void main ()
{
    printf ( "Output = %d\n", value );
    func();

}

Output = 100 Output = 0

Output = 100 Output = 100

Compilation error : Undeclared identifier

Linker error : One or more multiply defined symbols found

Question Number 57

Give the output of the following code snippet :

int main()
{
    int a = 0;
    int b = 1;

    int c = a >> 3;
    int d = b >> 4;

    if(c == d)
        printf("True");
    else
        printf("False");

}

True

False

Compilation error

Runtime error

Question Number 58

Give the output of the following code snippet :

int DecimalToOctal(long quotient)
{
    long remainder;
    int octalNumber[100], i = 1, j;
    while (quotient != 0)
    {
        octalNumber[i++] = quotient % 8;
        quotient = quotient / 8;
    }
    for (j = i - 1; j > 0; j--)
        printf("%d", octalNumber[j]);
    return 0;
}
void main()
{
    DecimalToOctal(100);
}

140

144

154

155

Question Number 59

Give the output of the following code snippet :

struct student
{
    char *name;
};
void func(struct student s)
{
    struct student *s1;
    s1=&s;
    strcpy(s1->name,"Jenn");
    printf("%s\t", s1->name);
}
void main()
{
    struct student s;
    func(s);
}

Jenn

No output

Null

Compilation error

Question Number 60

Give the output of the following code snippet :

void main()
{
    int x=10,y=20,z=0;
    if(x+y>!(y-x) || x-y< !(y+x))
    {
        x=100;
        y=200;
        z=!(x*y)/x;
    }
    else
        z=300;
    printf("%d %d %d",x,y,z);
}

100 200 0

10 20 300

100 200 200

Compilation error

Question Number 61

Give the output of the following code snippet :

void main()
{
    typedef unsigned int uint;
    typedef float fl;
    uint x=100,y=200;
    fl p=100.25,q=200.50;
    unsigned int a=300,b=400;
    int z = x+y-a/b;
    float w= q/p;
    float v=z/w;
    printf("%d",z);
}

300

0.000

Garbage value

Compilation error

Question Number 62

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */

int value;
void func();

/* Test1.c */

extern int value;
void func()
{
    printf ( "Output = %d", value );

}

/* Test2.c */

#include"Test1.h"

void main ()
{
    printf ( "Output = %d\n", value );
    func();

}

Garbage value Output = 0

Output = 0 Output = 0

Compilation error : Undeclared identifier

Linker error : One or more multiply defined symbols found

Question Number 63

Give the output of the following code snippet :

int main()
{
    char str1[15] = "Hello";
    char *str;
    str=str1;
    while(*str!='\0')
    {
        *str=*str+2;
        str++;
    }
    printf("%s",str1);
    return 0;
}

Hello

Jgnnq

Khooq

Runtime error

Question Number 64

Give the output of the following code snippet :

void main()
{
    int a = 3, b = 6, c;
    _asm
    {
        cmp         dword ptr[a], 3
        jne         Label1
        cmp         dword ptr[b], 0Ah
        jne         Label1
        mov         eax, dword ptr[a]
        imul        eax, dword ptr[b]
        mov         dword ptr[c], eax
        jmp         Label2
        Label1 : mov         eax, dword ptr[b]
        cdq
        idiv        dword ptr[a]
        mov         dword ptr[c],eax

    }
Label2:	printf("%d", c);
}

Compilation error

Question Number 65

Give the output of the following code snippet :

typedef int INT;
typedef float FLOAT;
void main()
{
    FLOAT a=100,b=200;
    INT x=10,y=20;
    float c=10;
    c=a+b-x/y;
    printf("%.2f %.2f",a+b,c);
}

300.00 Garbage value

300.00 300.00

Garbage value 30

Compilation error

Question Number 66

Give the output of the following code snippet :

int main()
{
    int i = 0, a = 105;
    _asm
    {
        mov         eax, dword ptr[i]

        add         eax, 1
        mov         dword ptr[i], eax

        Label2 : cmp         dword ptr[i], 0
        jne         Label1

        mov         ecx, dword ptr[i]
        sub         ecx, 1
        mov         dword ptr[i], ecx

        jmp         Label2

} Label1:
    printf("%d", a);
}

107

108

109

105

Question Number 67

Give the output of the following code snippet :

void main()
{
    int a=50,c=10,b=10;
    _asm
    {
        mov eax,10
        mov ebx,a
        sub eax,dword ptr[c]
        jnb Label2
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        cmp eax,ecx
        je Label1
        add eax,dword ptr[b]
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

20 30

50 10

30 20

10 10

Question Number 68

Give the output of the following code snippet :

int main()
{
    float x = 0.3;
    int y=10;
    if (x == 0.3)
        printf("%d",y++);
    else if (x == 0.3f)
        printf("%d",++y);
    else
        printf("%d",--y);
}

Question Number 69

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b =0, c=0,d=0;
    __asm
    {
        push 10
        push 20
        mov ebx,30
        mov eax, 40
        mov ecx,60
        push 50
        call label1
        mov a,eax
        mov b,ebx
        add esp, 12
        jmp Label2
        label1:
        mov d,eax
        mov eax, dword ptr[esp + 4]
        mov a, eax
        add a, ebx
        mov eax, dword ptr[esp + 8]
        mov b, eax
        mov eax, dword ptr[esp + 12]
        or ebx,ecx
        xor edx,ecx
        mov c,eax
        mov d,edx
        ret
    }
Label2:
    printf("%d %d %d %d", a, b, c, d);

}

10 20 60 20

10 30 62 20

10 62 10 60

10 36 10 50

Question Number 70

Give the output of the following code snippet :

void main()
{
    char *str[15]= {"This","is","a","Hello","World","Program"};
    char *x;
    x=str[4];
    str[4]=str[5];
    str[5]=x;
    printf("%s",str[0]);
}

This

Hello

Compilation error

Question Number 71

Give the output of the following code snippet :

int main()
{
    float x = 0.3;
    int y=10;
    if (x <  0.3f)
        printf("%d %d %d",sizeof(x),sizeof(0.3),sizeof(0.3f));
    else
        printf("Hello World");
}

2 2 2

4 4 4

4 8 4

Hello World

Question Number 72

Give the output of the following code snippet :

int main()
{
    char *Pa1;
    char c = 'D';
    _asm
    {
        lea         eax, [c]
        mov         dword ptr[Pa1], eax
    }
    printf("%d", *Pa1);
}

Runtime error

Question Number 73

Give the output of the following code snippet :

int main()
{
    int a = 5, b = 10, c=5;
    _asm
    {
        mov eax,a
        mov ebx,b
        shr eax,3
        shl ebx,4
        mov dword ptr[a],eax
        mov dword ptr[b],ebx
    }
    printf("%d %d",a,b);
}

100 60

160 0

100 0

160 10

Question Number 74

Which of the following are valid pointer operations in C?

< NIL>

Comparison of two pointers which point to members of the same array.

Addition of a pointer and an integer

Subtraction of pointers that point to elements of two different arrays.

Both 1 and 2

Question Number 75

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
extern int arg;
void func(int);
/* Test1.c */
#include "Test1.h"

int arg = 10;
void func(int arg)
{
    value=200;
    printf ( "Output = %d\n", arg+value );

}


/* Test2.c */
#include "Test1.h"

static int value = 200;

void main ()
{
    value = 300;
    func(arg+value);
}

Output = 501

Output = 510

Compilation error : Undeclared identifier.

Linker error : Unresolved external symbol.

Question Number 76

Give the output of the following code snippet :

void main()
{
    int a = 10;
    _asm
    {
        mov         eax, dword ptr[a]
        sub         eax, 5
        mov         dword ptr[ebp - 0D0h], eax
        cmp         dword ptr[ebp - 0D0h], 5
        je          Label1
        cmp         dword ptr[ebp - 0D0h], 0Ah
        je          Label2
        cmp         dword ptr[ebp - 0D0h], 0Fh
        je          Label3
        jmp         Label4

        Label1 : mov         dword ptr[a], 0Ah

        jmp         Label4

        Label2 : mov         dword ptr[a], 32h

        jmp         Label4

        Label3 : mov         dword ptr[a], 64h

    }
Label4:	printf("%d", a);
}

100

Question Number 77

Give the output of the following code snippet :

int main()
{
    int i, *p, q;
    _asm
    {
        mov         dword ptr[i], 1Fh
        lea         eax, [i]
        mov         dword ptr[p], eax
        mov         ecx, dword ptr[p]
        mov         edx, dword ptr[ecx]
        add         edx, 0Fh
        mov         eax, dword ptr[p]
        mov         dword ptr[eax], edx
        mov         ecx, dword ptr[p]
        mov         edx, dword ptr[ecx]
        mov         dword ptr[q], edx
        mov         eax, dword ptr[p]
        sub         eax, 6
        mov         dword ptr[p], eax
    }
    printf("%d", q);
}

Question Number 78

Give the output of the following code snippet :

void main()
{
    char s1[]="Hello";
    char *s2;
    int len=sizeof(s1);
    s2=(char*)malloc(len);
    memcpy(s2,s1);
    puts(s2);
}

Hello

No output

Garbage value

Compilation error

Question Number 79

Give the output of the following code snippet :

int ConvertToHex(long int binVal)
{
    long int hexVal = 0, i = 1, rem=0;
    while (binVal != 0)
    {
        rem = binVal % 10;
        hexVal = hexVal + rem * i;
        i = i * 2;
        binVal = binVal / 10;
    }
    printf("%lX", hexVal);
    return 0;
}

void main()
{
    ConvertToHex(1);
}

No output

Compilation error

Question Number 80

Give the output of the following code snippet :

struct p
{
    char *name;
    struct p *next;
};
struct p *ptrary;
int main()
{
    struct p p, q;
    p.name = "SourceLens";
    ptrary= &p;
    strcpy(q.name, p.name);
    ptrary = &q;
    printf("%s\n", ptrary->name);
    return 0;
}

SourceLens

Garbage Value

Runtime error

Compilation error

Question Number 81

Consider the following snippet : Give the importance of the following lines : for(int i=1;i<=n;i++) { temp2=temp2->next; }

void addtoLoc( int n,int num )
{
    struct node *temp2,*temp;
    temp2=head;
    if(temp2==NULL)
    {
        printf("Empty List");
        return;
    }
    for(int i=1; i< =n; i++)
        temp2=temp2->next;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->data=num;
    temp->next=temp2->next;
    temp2->next=temp;
}

To traverse the pointer to the end of the list

To traverse the pointer to the beginning of the list

To traverse the pointer to the middle of the list

To traverse the pointer to the position specified by 'n'.

Question Number 82

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b =0, c=0;
    __asm
    {
        push 10
        push 20
        mov ebx,30
        mov eax, 40
        mov ecx,label1
        call ecx
        add esp, 8
        cmp eax,ecx
        jle Label2
        label1:
        mov eax, dword ptr[esp + 4]
        mov a, eax
        mov eax, dword ptr[esp + 12]
        mov b, eax
        mov eax, dword ptr[esp + 8]
        mov c, eax
        ret
    }
Label2:
    printf("%d %d %d", a, b, c);

}

10 0 30

40 30 0

20 0 10

Runtime error

Question Number 83

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void SortList()
{
    node *temp1,*temp2,*temp3,*temp4,*temp5;
    temp4=NULL;
    while(temp4!=Head->next)
    {
        temp3=temp1=Head;
        temp2=temp1->next;
        while(temp1!=temp4)
        {
            if(temp1->x > temp2->x)
            {
                if(temp1==Head)
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    Head = temp2;
                    temp3=temp2;
                }
                else
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    temp3->next = temp2;
                    temp3=temp2;
                }
            }
            else
            {
                temp3=temp1;
                temp1=temp1->next;
            }
            temp2=temp1->next;
            if(temp2 == temp4)
                temp4=temp1;
        }
    }
}
void AddNode( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->x=num;
    temp->next=Head;
    Head=temp;

}
void  Display()
{
    struct node *r;
    r=Head;
    while(r!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
    printf("\n");
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    AddNode(20);
    AddNode(3);
    AddNode(100);
    AddNode(50);
    SortList();
    Display();
}

3 5 6 10 20 50 100

100 50 20 10 6 5 3

3 5 6 10 20 50

Compilation error

Question Number 84

Give the output of the following code snippet :

#define valx 2
#define valy 2
#define valz 2
void main()
{
    int ***arr;
    int i,j,k;
    arr=(int**)malloc(valx*sizeof(int**));
    for(i=0; i< valx; i++)
    {
        arr[i]=(int**)malloc(valy*sizeof(int*));
        for(j=0; j< valy; j++)
            arr[i][j]=(int*)malloc(valz*sizeof(int));
    }
    for(k=0; k< valz; k++)
    {
        for(i=0; i< valx; i++)
        {
            for(j=0; j< valy; j++)
            {
                arr[i][j][k]=i+j+k;
                printf("%d ",arr[i][j][k]);
                break;
            }
        }
    }
}

0 0 0 1 1 1 2 3

0 0 1 2

0 1 1 2

Compilation error

Question Number 85

Give the output of the following code snippet :

int main()
{
    int i = 10;
    int *p = &i;
    printf("%f\n", *(float*)p);
    return 0;
}

10.00

0.000000

Question Number 86

Give the output of the following code snippet :

int main()
{
    int x=100,y=200;
    int z=++x || y--;
    if(z > x%y & y%x)
        printf("%d",z++- ++x);
    else
        printf("%d",z--+ --y);
}

100

200

-198

-199

Question Number 87

Give the output of the following code snippet :

void func(float *i)
{
    *i=200.5;
}

void func2(float i)
{
    i=300.75;
}
int main()
{
    float i=100.25;
    func(&i);
    func2(i);
    printf("%.2f ", i);
}

100.25

200.50

300.75

Compilation error

Question Number 88

Give the output of the following code snippet :

void print(char *str,...)
{
    int i;
    va_list marker;
    va_start(marker,str);
    i=va_arg(marker,int);
    i=va_arg(marker,int);
    printf("%d",i);
    va_end(marker);
}
int main()
{
    print("Start ",2,4,-1);
}

2 4

Compilation error

Question Number 89

Give the output of the following code snippet :

int main()
{
    int a = 20, b = 10,c=2;
    _asm
    {
        mov eax,100
        mov ebx,dword ptr[b]
        push eax
        push ebx
        mov ecx,esp
        sub ebx,ecx
        pop ebx
        pop eax
        mov a,eax
        mov b,ebx
    }
    printf("%d %d",a,b);
}

100 10

100 0

10 100

Compilation error

Question Number 90

Files Test1.c, Test1.h, Test2.c and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
extern int value;
void func();
void func1();
/* Test1.c */
#include "Test1.h"
int value = 300;
void func()
{
    value=200;
    printf ( "Output = %d\n", ++value );
    func1();

}

/* Test2.c */
#include "Test1.h"

void func1()
{
    printf ( "Output = %d\n", ++value );

}


/* Test3.c */

#include "Test1.h"

void main ()
{
    func1();
    func();
}

Output = 301 Output = 201

Output = 301 Output = 201 Output = 202

Compilation error : Redefinition of variable.

Linker error : One or more multiply defined symbols found.

Question Number 91

Give the output of the following code snippet :

void main()
{
    int a[2][5] = {1, 2, 3, 0};
    for (int i = 0; i <  1; i++)
        for (int j = 0; j <  1; j++)
            printf("%d ", *a[0]);
}

1 2

1 1

Compilation error

Question Number 92

Give the output of the following code snippet :

void main()
{
    int a=20,c=10,b=30;
    _asm
    {
        mov eax,30
        mov ebx,a
        sub eax,dword ptr[c]
        jb Label2
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        cmp eax,ecx
        je Label1
        and eax,dword ptr[b]
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

30 20

30 10

20 30

20 10

Question Number 93

Give the output of the following code snippet :

int mul(int a, int b)
{
    return a*b;
}
void main()
{
    int (*fptr)(int, int);
    fptr = &mul;
    printf("%d",(*fptr)(5,5));
}

Garbage value

Compilation error

Question Number 94

Give the output of the following code snippet :

struct temp
{
    int a;
} s;
void func(struct temp)
{
    s.a = 5;
    printf("%d ", s.a);
}
void main()
{
    func(s);
    printf("%d\t", s.a);
}

5 0

0 0

5 5

Compilation error

Question Number 95

Give the output of the following code snippet :

void BinaryToDecimal(int num)
{
    int binary_val, decimal_val = 0, base = 1, rem;
    while (num > 0)
    {
        rem = num % 10;
        decimal_val = decimal_val + rem * base;
        num = num / 10 ;
        base = base * 2;
    }
    printf("%d ", decimal_val);
}
void main()
{
    BinaryToDecimal(11001);
}

Compilation error

Question Number 96

Give the output of the following code snippet :

struct temp
{
    int a;
    int b;
    int c;
} p[] = {10,20,30,10};
void main()
{
    printf("%d", sizeof(p));
}

Question Number 97

Give the output of the following code snippet :

union p
{
    int x;
    char y;
};
int main()
{
    union p p1;
    union p *ptr1 = &p1;
    ptr1->x=100;
    ptr1->y='C';
    printf("%d\n",ptr1->x);
}

100

Question Number 98

Give the output of the following code snippet :

void print(char *str,...)
{
    int i;
    va_list marker;
    va_start(marker,str);
    i=va_arg(marker,int);
    i=va_arg(marker,int);
    i=va_arg(marker,int);
    printf("%d",i);
    va_end(marker);
}
int main()
{
    print("Start ",2,-1);
}

-1

Compilation error

Question Number 99

Give the output of the following code snippet :

void main()
{
    int x=10,y=20;
    int z=x+y;
    int* const ptr=&x;
    ptr=&y;
    printf("%d",*ptr);
}

Garbage value

Compilation error

Question Number 100

Give the output of the following code snippet :

int main()
{
    char str1[20]="Hello";
    char str[10] = "World";
    int i=strlen(str1)-1;
    while(i!=0)
    {
        putchar(str1[i]);
        i--;
    }
}

Hello

olleH

olle

Runtime error

Question Number 101

Give the output of the following code snippet with the following command line arguments : >Test.c 100 200 300

int main(int argc, char *argv[])
{
    int i=strlen(argv[3]);
    int sum=0;
    do
        printf("%d ",atoi(argv[--argc])+atoi(argv[--argc])+atoi(argv[argc]));
    while(argc);
}

300 200

600 400 200 0

600 0

500 300 100

Question Number 102

Give the output of the following code snippet run with the following commandline arguments: >Testfile.c Yellow Jello

/* Testfile.c */

int main(int argc, char *argv[])
{
    printf("%s", *++argv+2 );
    return 0;
}

llo

llow

Ello

Compilation error

Question Number 103

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
void func();

/* Test1.c */
#include "Test1.h"

static int value=200;
void func()
{
    printf ( "Output = %d\n", value );

}


/* Test2.c */
#include "Test1.h"

void main ()
{
    func();
    printf ( "Output = %d\n", value );
}

Output = 100 Output = 200

Output = 200 Output = 100

Compilation error : Undeclared identifier.

Linker error : Redefinition of value.

Question Number 104

Give the output of the following code snippet :

void main()
{
    int x=10,y=20,arr[3],i;
    for(i=0; i< 3; i++)
    {
        arr[i]=(++x);
        printf("%d  ",arr[i]++);
    }
}

10 11 12

11 12 13

12 13 14

10 20 30

Question Number 105

Give the output of the following code snippet :

struct p
{
    int x;
    char y;
    struct p *ptr;
};
int main()
{
    struct p t = {1, 2, 3, 4};
    printf("%d\n", t.ptr->x);
    return 0;
}

Compilation error

Question Number 106

Give the output of the following code snippet :

int DecToBin(int num)
{
    if (num == 0)
    {
        return 0;
    }
    else
    {
        return (num % 2) + 10 * DecToBin(num / 2);
    }
}

int main()
{
    printf("%d",DecToBin(2));
}

100

Question Number 107

Give the output of the following code snippet :

struct stud
{
    int no;
    int no2;
};
void func(struct stud stuobj)
{
    struct stud s;
    s=stuobj;
    printf("%d",s.no);
}
void main()
{
    struct stud s;
    s.no=1001;
    func(s);
}

1001

No output

Compilation error

Garbage value

Question Number 108

Files Test1.c, Test1.h, Test2.c and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
extern int value;
void func();
void func1();
/* Test1.c */
#include "Test1.h"
int value = 300;
void func()
{
    value=200;
    printf ( "Output = %d\n", ++value );
    func1();

}

/* Test2.c */
#include "Test1.h"

void func1()
{
    value=200;
    printf ( "Output = %d\n", ++value );

}


/* Test3.c */

#include "Test1.h"

void main ()
{
    func1();
    func();
}

Output = 301 Output = 201

Output = 201 Output = 201 Output = 201

Compilation error : Redefinition of variable.

Linker error : One or more multiply defined symbols found.

Question Number 109

Give the output of the following code snippet :

int main()
{
    char str1[15] = "Hello World";
    char ch = 'W';
    char *str;
    str=strchr(str1,ch);
    printf(6+"Hello World");
    return 0;
}

Hello

World

No output

Runtime error

Question Number 110

Give the output of the following code snippet :

void main()
{
    int row=2,col=2;
    int **arr;
    int i,j;
    arr=(int*)malloc(2*2*sizeof(int));
    for(i=0; i< row; i++)
    {
        for(j=0; j< col; j++)
        {
            arr[i*col+j]=i*i;
            printf("%d ",arr[i*col+j]);
        }
    }
}

0 0 1 1

0 1 2 3

0 1 1 2

Compilation error

Question Number 111

Give the output of the following code snippet :

void main()
{
    int a=10,c=20,b=10;
    _asm
    {
        mov eax,20
        mov ebx,a
        sub eax,dword ptr[b]
        jbe Label2
        and eax,c
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        sub ecx,eax
        je Label1
        or eax,50
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

0 50

10 0

10 50

20 30

Question Number 112

Give the output of the following code snippet :

int main()
{
    int i, *j, k;
    _asm
    {
        mov         dword ptr[i], 0Ah
        lea         eax, [i]
        mov         dword ptr[j], eax
        mov         ecx, dword ptr[j]
        mov         edx, dword ptr[i]
        imul        edx, dword ptr[ecx]
        mov         eax, dword ptr[j]
        imul        edx, dword ptr[eax]
        mov         dword ptr[k], edx
    }
    printf("%d\n", k);
    return 0;
}

100

150

300

1000

Question Number 113

Give the output of the following code snippet :

#define valx 2
#define valy 2
#define valz 2
void main()
{
    int ***arr;
    int i,j,k;
    arr=(int***)malloc(valx*sizeof(int**));
    for(i=0; i< valx; i++)
    {
        arr[i]=(int**)malloc(valy*sizeof(int*));
        for(j=0; j< valy; j++)
            arr[i][j]=(int*)malloc(valz*sizeof(int));
    }
    for(k=0; k< valz; k++)
    {
        for(i=0; i< valx; i++)
        {
            for(j=0; j< valy; j++)
            {
                arr[i][j][k]=i*j*k;
                printf("%d ",arr[i][j][k]);
                break;
            }
        }
    }
}

0 0 0 0 0 0 0 1

0 0 1 1

0 1 1 1

0 0 0 0

Question Number 114

Give the output of the following code snippet :

void m(int p, int q)
{
    printf("%d %d\n", p, q);
}
void main()
{
    int a = 6, b = 5;
    m(&a);
}

No output

Compilation error

Question Number 115

Give the output of the following code snippet :

int main()
{

    int (*p)[5];
    int a[][5]= {1,2,3,4,5,6};
    p=a;
    int *q[]= {*a,*a+1,*a+2};
    printf("%d %d %d",**p+3,**q+2,**a);

}

4 2 0

5 3 0

4 2 1

3 4 5

Question Number 116

Give the output of the following code snippet :

void func(int *val)
{
    *val+=10;
}

void main()
{
    const int arry[10]= {1,2,3,4,5};
    func(&arry[0]);
    char str[15]="Hello World";
    arry[2]=10;
    str[0]='Y';
    printf("%d %s",arry[2]+arry[0],str);
}

40 Hello World

21 Yello World

20 Hello World

Compilation error

Question Number 117

Give the output of the following code snippet :

int mult(int x, int y, int z)
{
    _asm
    {
        mov         eax,dword ptr [x]
        mul         dword ptr [y]
        add			eax,dword ptr[z]
    }
}
void main()
{
    int(*fptr)(int a, int b, int c);
    int a = 0;
    fptr=mult;
    _asm
    {
        push        64h
        push        4h
        push        10h
        call        dword ptr [fptr]
        add         esp,12
        mov         dword ptr [a],eax
    }
    printf("%d", a);
}

145

154

164

150

Question Number 118

Give the output of the following code snippet :

int Mult(int first,...)
{
    int prod=1, count=0,i=first;
    va_list marker;

    while(i!=0)
    {
        prod*=i;
        count++;
        i=va_arg(marker,int);
    }
    va_end(marker);
    return prod;
}

int main(int argc, char *argv[])
{
    printf("%d",Mult(2,3,0));
}

Runtime error

Garbage value

Question Number 119

Give the output of the following code snippet :

int main()
{
    int a,b=2,c=10;
    _asm
    {
        mov dword ptr[a],0
        mov ecx,dword ptr[b]
        mov dword ptr[b],20
        add ecx,dword ptr[c]
        shl ecx,2
        dec ecx
        mov a,ecx
    }
    printf("%d",a);
}

Question Number 120

Give the output of the following code snippet :

void fun(int*);
int main()
{
    int i = 10;
    fun((&i)++);
}
void fun(int *p)
{
    printf("%d\n", *p);
}

Garbage value

Compilation error

Question Number 121

Give the output of the following code snippet :

int print(int num,...)
{
    int sum=0, count=0,i,j;
    va_list marker;
    va_start(marker,num);
    for(i=0; i< num; i++)
    {
        j=va_arg(marker,int);
        printf("%d ",j);
    }
    va_end(marker);
    return sum;
}
int main(int argc, char *argv[])
{
    print(2,4,6,-1);
}

2 4 6 -1

2 4 6 -1 0

4 6

Runtime error

Question Number 122

Give the output of the following code snippet :

void convertToBinary(int val)
{
    for (int c = 3; c >= 0; c--)
    {
        int k = val >> c;
        if (k & 1)
            printf("1");
        else
            printf("0");
    }
}
int main()
{
    convertToBinary(0);

}

000

0000

Compilation error

Question Number 123

Give the output of the following code snippet :

int main()
{
    int a = 1;
    _asm
    {
        mov         eax, dword ptr[a]
        mov         dword ptr[ebp - 0D0h], eax
        cmp         dword ptr[ebp - 0D0h], 1
        je          Label1
        cmp         dword ptr[ebp - 0D0h], 2
        je          Label2
        cmp         dword ptr[ebp - 0D0h], 3
        je          Label3
        jmp         Label4

        Label1 : mov         dword ptr[a], 2

        Label2 : mov         dword ptr[a], 3

        jmp         Label4
        Label3 : mov         eax, dword ptr[a]
        add         eax, 4
        mov         dword ptr[a], eax

    }

Label4 :	printf("%d", a);
}

Question Number 124

Give the output of the following code snippet :


void func(struct emp*);
struct emp
{
    char name[20];
    int age;
};
int main()
{
    struct emp e = {"Jenn", 20};
    func(&e);
    printf("%s %d", e.name, e.age);
}
void func(struct emp *p)
{
    p ->age=p->age+2;
}

Jenn 20

Jenn 22

Compilation error

Jenn Garbage Value

Question Number 125

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
extern int value;
void func(int);
/* Test1.c */
#include "Test1.h"

void func(int arg)
{
    value=200;
    printf ( "Output = %d\n", arg+value );

}


/* Test2.c */
#include "Test1.h"

static int arg=10;
void main ()
{
    value = 300;
    func(arg+value);
}

Output = 511

Output = 510

Compilation error : Undeclared identifier.

Linker error : Unresolved external symbol value.

Question Number 126

Give the output of the following code snippet :

void main()
{
    int a = 5;
    _asm
    {
        mov         dword ptr[ebp - 0D0h], 5
        cmp         dword ptr[ebp - 0D0h], 1
        je          Label1
        cmp         dword ptr[ebp - 0D0h], 5
        je          Label2
        jmp         Label3
        Label1 : mov         dword ptr[a], 0Ah
        jmp         Label3
        Label2 : mov         dword ptr[a], 14h

    }
Label3:
    printf("%d", a);
}

Compilation error

Question Number 127

Give the output of the following code snippet with the following command line arguments : >Test.c Hello World

int main(int argc, char *argv[])
{
    int i=0;
    while(i!=argc)
    {
        printf("%s ", (argv[i]+1));
        i++;
    }
    return 0;
}

Hello World

Test.c Hello

Test.c ello orld

Compilation error

Question Number 128

Give the output of the following code snippet :

void main()
{
    int a=30,c=-10,b=30;
    _asm
    {
        mov eax,10
        mov ebx,b
        sub eax,dword ptr[a]
        jo Label2
        mov edx,dword ptr[c]
        xor edx,eax
        mov b,edx
        Label2:
        mov ecx,dword ptr[a]
        mov ebx,10
        cmp ecx,ebx
        je Label1
        add eax,ecx
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

30 44

26 10

44 20

25 30

Question Number 129

Give the output of the following code snippet :

struct student
{
    char *name;
    int age;
};
struct student s[2];
void main()
{
    s[0].name = "Jenn ";
    s[1] = s[0];
    printf("%s %s", s[0].name, s[1].name);
}

Jenn Jenn

Jenn Garbagevalue

Jenn null

Compilation error

Question Number 130

Give the output of the following code snippet :

void main()
{
    int row=2,col=2;
    int *arr;
    int i,j;
    arr=(int*)malloc(row*col*sizeof(int));
    for(i=0; i< row; i++)
    {
        for(j=0; j< col; j++)
        {
            arr[i*col+j]=i*i;
            printf("%d ",arr[i*col+j]);
        }
    }

}

0 0 1 1

0 1 2 3

0 1 1 2

Compilation error

Question Number 131

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void SortList()
{
    node *temp1,*temp2,*temp3,*temp4,*temp5;
    temp4=NULL;
    while(temp4!=Head->next)
    {
        temp3=temp1=Head;
        temp2=temp1->next;
        while(temp1!=temp4)
        {
            if(temp1->x <  temp2->x)
            {
                if(temp1==Head)
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    Head = temp2;
                    temp3=temp2;
                }
                else
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    temp3->next = temp2;
                    temp3=temp2;
                }
            }
            else
            {
                temp3=temp1;
                temp1=temp1->next;
            }
            temp2=temp1->next;
            if(temp2 == temp4)
                temp4=temp1;
        }
    }
}
void AddNode( int num )
{
    struct node *temp,*temp2;
    if(Head==NULL)
    {
        temp2=(struct node *)malloc(sizeof(struct node));
        temp2->x=num;
        temp2->next=NULL;
        Head=temp2;
    }
    else
        temp=Head;
    while(temp->next!=NULL)
        temp=temp->next;
    temp2=(struct node *)malloc(sizeof(struct node));
    temp2->x=num;
    temp2->next=NULL;
    temp->next=temp2;
}

void  Display()
{
    struct node *r;
    r=Head->next;
    while(r->next!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
    printf("\n");
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    AddNode(20);
    AddNode(3);
    AddNode(100);
    AddNode(50);
    SortList();
    Display();
}

100 50 20 10 6 5 3

5 6 10 20 50 100

100 50 20 10 6 5

6 10 20 50 100

Question Number 132

Give the output of the following code snippet :

struct student
{
    char *name;
};
struct student s[2], *r[2];
void main()
{
    s[0].name = "Jenn";
    r[1] = &s[0];
    printf("%s", r->name);
}

Jenn

Null

Garbage value

Compilation error

Question Number 133

Give the output of the following code snippet :

int main()
{
    int *Pa1 = 0;
    int *Pa2 = 0;
    int *Pa3 = 0;
    int a, b, c;

    _asm
    {
        mov         dword ptr[a], 0Ah
        mov         dword ptr[b], 14h
        lea         eax, [a]
        mov         dword ptr[Pa1], eax
        lea         ecx, [b]
        mov         dword ptr[Pa2], ecx
        mov         edx, dword ptr[Pa1]
        mov         ecx, dword ptr[Pa2]
        mov         eax, dword ptr[edx]
        cdq
        idiv        dword ptr[ecx]
        mov         dword ptr[c], eax
        lea         edx, [c]
        mov         dword ptr[Pa3], edx
    }

    printf("%d", *Pa3);
}

Question Number 134

Give the output of the following code snippet whose solution configuration has been set to the DEBUG mode :

int main()
{
    int a = 0;
    int b = 0;
    int c = 0;
    _asm
    {
        mov eax, 10
        push eax
        push 200
        mov ebx, dword ptr[esp]
        mov a, ebx
        mov ebx, dword ptr[esp + 4]
        mov b, ebx
        push 300
        mov ebx, dword ptr[esp + 8]
        mov c, ebx

    }
    printf("%d %d %d", a, b, c);
}

200 300 10

200 10 10

300 200 10

Runtime error

Question Number 135

Give the output of the following code snippet :

void main()
{
    char *str;
    char *str2;
    str="Hello";
    str2="World";
    strcpy(str,str2);
    printf("%s",str);

}

Hello

World

Hello World

Runtime error

Question Number 136

Which of the following is an example of a null pointer in C?

< NIL>

int *ptr=NULL;

char * ptr=0;

float *ptr=(float *)0;

All of the above.

Question Number 137

Predict the output of the following code snippet :

struct node
{
    int data;
    struct node *next;
}*head;

void add( int num )
{
    struct node *temp;
    temp=(struct node *)malloc(sizeof(struct node));
    temp->data=num;
    if (head== NULL)
    {
        head=temp;
        head->next=NULL;
    }
    else
    {
        temp->next=head;
        head=temp->next;
    }
}

void  display()
{
    struct node *r;
    r=head;
    while(r!=NULL)
    {
        printf("%d ",r->data);
        r=r->next;
    }
}

void main()
{
    add(100);
    add(200);
    add(300);
    add(400);
    display();
}

100 200 300 400

400 300 200 100

100

Runtime error

Question Number 138

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b =0, c=0,d=0;
    __asm
    {
        push 100
        push 200
        push 500
        mov ebx,300
        mov eax, 400
        call label1
        add esp, 12
        jmp Label2
        label1:
        mov d,eax
        mov eax, dword ptr[esp + 4]
        mov a, eax
        mov eax, dword ptr[esp + 8]
        mov b, eax
        mov eax, dword ptr[esp + 12]
        sub eax,ebx
        mov c,eax
        ret
    }
Label2:
    printf("%d %d %d %d", a, b, c, d);

}

500 300 200 400

500 300 -200 400

500 200 -200 400

500 400 300 100

Question Number 139

Give the output of the following code snippet :

typedef struct stud s;
void func(struct stud *stuobj);
struct stud
{
    int no;
    int no2;
    s link;
};

void main()
{
    struct stud s= {10,20};
    func(&s);
}
void func(struct stud *stuobj)
{
    struct stud *s;
    s=stuobj;
    printf("%d",s->no);
}

No output

Compilation error

Garbage value

Question Number 140

Give the output of the following code snippet :

void main()
{
    int a=20,b=30,c=40;
    unsigned int d=2;
    int x=1,y=2,z=30;
    x= c || b  & a ;
    y = x || 2 || b;
    printf("%d %d  %d",x,y,-2 < <  2);
}

3 1 18

0 2 8

1 1 -8

Compilation error

Question Number 141

Consider the given lines of code : What does the line below signify? if(head == NULL)

void add( int num )
{
    struct node *temp;
    if (head== NULL)
    {
        head=temp;
        head->next=NULL;
    }
    temp=(struct node *)malloc(sizeof(struct node));
    temp->data=num;
    temp->next=head;
    head=temp;

}

If the list is empty, the new node is created and attached to the head.

If the list is empty, a new node cannot be created and attached to the head.

If the list is not empty, the node is added to the end of the list.

If the list is not empty, the node is added to the middle of the list

Question Number 142

Give the output of the following code snippet :

void main()
{
    int a=10,b=20,c=30;
    unsigned int d=12;
    int x,y,z=40;
    x=a && b || c;
    y=x< < 2;
    z>>=2;
    printf("%d %d %d",x,y,~z);
}

1 4 -11

11 2 -1

1 -7 -13

11 0 -8

Question Number 143

Give the output of the following code snippet :

void print(char* first,...)
{
    int sum=0, count=0,i;
    int marker;
    va_start(marker,first);
    do
    {
        i=va_arg(marker,int);
        printf("%d ",i);
    }
    while(i!=6);
    va_end(marker);
}
int main(int argc, char *argv[])
{
    print("Test",2,4.3,6.5,-1);
}

2 0 0

2 4.3 6.5 -1

4.3 6.5

Compilation error

Question Number 144

Files Test1.c, Test1.h, Test2.c, Test2.h and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
void func1();


/* Test2.h */
extern int value;
void func();

/* Test1.c */

#include"Test2.h"

void func()
{
    printf("Output = %d\n",value);
}

/* Test2.c */
#include"Test2.h"
int value = 200;

void func1()
{
    printf ( "Output = %d\n", ++value );

}



/* Test3.c */

#include "Test1.h"

void main ()
{
    func1();
    func();
}

Output = 201 Output = 201

Output = 101 Output = 200

Compilation error : Identifier not found

Linker error : Unresolved external symbol found.

Question Number 145

Give the output of the following code snippet :

void m(int *p)
{
    printf("%d\n", *p);
}
void main()
{
    int a = 6, b = 5;
    m(&a, &b);
    printf("%d %d\n", a, b);
}

Compilation error

Garbage value

Question Number 146

Give the output of the following code snippet :

typedef int(*fptr)(int a);
typedef struct
{
    int a;
    fptr fpt[100];
} fp;

int fun(int a)
{
    _asm
    {
        mov         dword ptr[a], 0C8h
    }
    printf("%d", a);
    return 0;
}

int _tmain()
{
    fp myS;
    myS.fpt[0] = fun;
    _asm
    {
        push        64h
        mov         edx, 4
        imul        eax, edx, 0
        mov         ecx, dword ptr[ebp + eax - 190h]
        call        ecx
        add         esp, 4
    }

}

100

200

Runtime error

Question Number 147

A pointer may be of the types :

< NIL>

enum

void

string

Both 1 and 2

Question Number 148

Give the output of the following code snippet :

int main()
{
    const int y=100;
    const int* z=&y;

    *z=200;
    printf("%d",*z);

}

100

200

Compilation error

Garbage value

Question Number 149

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */

int value = 400;
void func();
/* Test1.c */

#include "Test1.h"

static int value = 100;
void func()
{
    static int value = 200;
    printf ( "Output = %d\n", value );
    value = 300;

}

/* Test2.c */
static int value = 100;
void main ()
{
    func();
    printf ( "Output = %d\n", value );
}

Output = 100 Output = 200

Output = 100 Output = 100

Compilation error : Redefinition of value.

Linker error : Redefinition of value.

Question Number 150

Give the output of the following code snippet who's solution configuration has been set to the DEBUG mode :

int main()
{
    int a = 0;
    int b = 0;
    _asm
    {
        mov eax, 10
        push eax
        mov ebx, 20
        push ebx
        mov ecx, 30
        push ecx
        mov edx, 40
        push edx
        mov ebx, dword ptr[esp]
        mov a, ebx
        mov ebx, dword ptr[esp + 4]
        mov b, ebx
        add esp,0x10

    }
    printf("%d %d",a,b);
}

40 30

30 20

10 20

Runtime error

Question Number 151

Give the output of the following code snippet :

struct student
{
    char *name;
};
struct student fun()
{
    struct student s;
    s.name = "Anne";
    return s;
}
void main()
{
    struct student m = fun();
    printf("%s", m.name);
}

Anne

No output

Garbage value

Compilation error

Question Number 152

Give the output of the following code snippet :


void main()
{
    int i, prod = 1, j = 3;
    _asm
    {
        mov         dword ptr[i], 0
        jmp         Label1
        Label3 : mov         eax, dword ptr[i]
        add         eax, 1
        mov         dword ptr[i], eax
        Label1 : cmp         dword ptr[i], 3
        jge         Label2

        mov         ecx, dword ptr[i]
        add         ecx, dword ptr[j]
        imul        ecx, dword ptr[prod]
        mov         dword ptr[prod], ecx

        jmp         Label3

    }
Label2:	printf("%d", prod);
}

Question Number 153

Give the output of the following code snippet :

int sum(int first,....)
{
    int sum=0, count=0,i=first;
    va_list marker;
    va_start(marker,first);
    while(i!=-1)
    {
        sum+=i;
        count++;
        i=va_arg(marker,int);
    }
    va_end(marker);
    return sum;
}


int main(int argc, char *argv[])
{
    printf("%d",sum(2,3,4,-1));
}

Compilation error

Question Number 154

Give the output of the following code snippet :

void func(char *s)
{
    printf("%s",s);;
}
void main()
{
    char str[]="Hello World";
    char *str1="Hello world";
    str="New Program";
    func(str);
}

New Program

Hello world

No output

Compilation error

Question Number 155

Give the output of the following code snippet :

void main()
{
    int a[10] = {1};
    printf("%d %d", sizeof(a),*a);
};

10 0

10 1

40 1

Compilation error

Question Number 156

Give the output of the following code snippet :

struct point
{
    int x;
    int y;
};
struct point func(struct point);
int main()
{
    struct point p1 = {1, 2};
    p1.y=func(p1);
    printf("%d\n", p1.y);
}
struct point func(struct point p)
{
    p.y=20;
    return p;
}

Compilation error

Question Number 157

Give the output of the following code snippet :

int func(int a,int b)
{
    int x=a++;
    int y=a--%b++;
    return x< y;
}

int main()
{
    int x=100,y=200;
    int z = func(100,200);
    printf("%d",z);
}

No output

Compilation error

Question Number 158

Give the output of the following code snippet :

void main()
{
    int a[2][2] = {1, 2, 3, };
    for (int i = 0; i <  2; i++)
        for (int j = 0; j <  2; j++)
            printf("%d ", a[i][j]);
}

1 2 3 0

1 2 3 Garbage value

Compilation error

1 2 3

Question Number 159

Give the output of the following code snippet :

int func(int *x)
{
    int *ptr;
    int y=100;
    ptr=x;
    ptr=&y;
    return *ptr;
}
void main()
{
    int (*f[5])(int*);
    int *a;
    int b=200;
    a=&b;
    f[0]=func;
    printf("%d",(*f)(*a));
}

100

200

Garbage value

Compilation error

Question Number 160

Give the output of the following code snippet :

#define offset(type,mem)(int)&(((type*)1)->mem)
int main()
{
    struct u
    {
        char x[10];
        int y;
        float z;
    } p;
    int offx,offy,offz;
    offx=offset(struct u,x);
    printf("%d ", offx);
    offy=offset(struct u,y);
    printf("%d ", offy);
    offz=offset(struct u,z);
    printf("%d ", offz);

}

0 12 16

0 11 15

0 12 18

1 13 17

Question Number 161

Give the output of the following code snippet with the following command line arguments : >Test.c 100 200 300

int main(int argc, char *argv[])
{
    int i=strlen(argv[3]);
    int sum=0;
    do
        printf("%d ",atoi(argv[argc])+atoi(argv[--argc]));
    while(argc);
}

600 500 400 300

600 400 200 0

500 400 300 200

500 300 100 -100

Question Number 162

Give the output of the following code snippet :

int main()
{
    int a = 15, b = 10, c;
    _asm
    {
        mov eax,a
        mov ebx,b
        mov edx,dword ptr[c]
        xor eax,ebx
        or  eax,edx
        dec edx
        mov dword ptr[a],eax
        mov dword ptr[b],edx
    }
    printf("%d %d",a,b);
}

15 0

15 Garbage value

14 -1

15 -1

Question Number 163

Give the output of the following code snippet with the following command line arguments : >Test.c 100 200 300

int main(int argc, char *argv[])
{
    for(int i=0; i< argc; i++)
        printf("%d ", atoi(argv[i]));
    return 0;
}

Test.c 100 200 300

100 200 300

0 100 200 300

Compilation error

Question Number 164

Give the output of the following code snippet :

void main()
{
    int a=20,c=10,b=0;
    _asm
    {
        mov eax,20
        mov ebx,a
        cmp eax,ebx
        je Label2
        mov b,eax
        Label2:
        mov ecx,c
        and eax,ecx
        mov c,eax

    }
    printf("%d %d",b,c);
}

20 0

0 20

0 0

20 20

Question Number 165

Give the output of the following code snippet :

struct stud
{
    int age;
    char *name;
};
const struct stud s;
void main()
{
    struct stud s2= {20,"Jenn"};
    s=s2;
    s.age=22;
    printf("%d",s.age);
}

Garbage value

Compilation error

Question Number 166

Give the output of the following code snippet :

void func(char **a)
{
    printf("%d %s",strlen(*(a+3)),*(a+3));
}
void main()
{
    char *str1[15]= {"This","is","a","Hello","World","Program"};
    char **x;
    x=str1;
    func(x);
}

1 a

5 Hello

5 World

Runtime error

Question Number 167

Consider the given code : Which of the following statements in the code is used to indicate that it is a self referencing structure?

struct node
{
    int x;
    struct node *next;
}
node *Head;

struct node

int x

struct node *next

node *Head

Question Number 168

Give the output of the following code snippet :

int func()
{
    int *ptr;
    int x=100;
    ptr=&x;
    return *ptr;
}
void main()
{
    int (*f[5])();
    *f=func;
    printf("%d",(*f)());
}

100

Runtime error

Garbage value

Compilation error

Question Number 169

Give the output of the following code snippet :

struct temp
{
    int a;
} s;
void change(struct temp s)
{
    s.a = 1;
}
void main()
{
    s.a = 10;
    change(s);
    printf("%d\n", s.a);
}

Compilation error

Question Number 170

Give the output of the following code snippet :

void main()
{
    int a=10,c=20,b=-30;
    _asm
    {
        mov eax,40
        mov ebx,dword ptr[b]
        cmp eax,ebx
        jle Label2
        or eax,ebx
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        sub ecx,ebx
        jz Label1
        or eax,ecx
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

20 -24

-22 -22

-38 -33

40 -30

Question Number 171

Give the output of the following code snippet :

struct temp
{
    int a;
} s[5];
void func(struct temp*)
{
    s[0].a = 5;
    printf("%d ", s[0].a);
}
void main()
{
    func(s);
    printf("%d\t", s.a);
}

5 0

0 0

5 5

Compilation error

Question Number 172

Give the output of the following code snippet who's solution configuration has been set to the DEBUG mode :

int main()
{
    int a = 200, b = 100, c = 2;
    _asm
    {
        mov eax, esp
        mov ebx, 10
        push eax
        push ebx
        mov ecx, esp
        mov ebx, dword ptr[b]
        sub ecx, eax
        mov a, ecx
        mov b, ebx
        add esp,8

    }
    printf("%d %d", a, b);
}

-12 10

8 100

-8 100

Runtime error

Question Number 173

Give the output of the following code snippet :

void print(int num,va_list marker);
void disp(int num,...)
{
    va_list val;
    va_start(val,num);
    print(num,val);
}
void print(int num,va_list marker)
{
    int i,k,j;
    for(i=0; i< num; i++)
    {
        j=va_arg(marker,int);
        printf("%d ",j);
    }
    va_end(marker);
}
int main(int argc, char *argv[])
{
    disp(3,10,20,30);
}

10 20 30

100 10 20 30

10 10 10

Compilation error

Question Number 174

Give the output of the following code snippet :

#define SIZE 8
#define MASK(x) (1< <  x % SIZE)
#define BSLOT(y)(y/SIZE)
#define SET(x,y)(x[BSLOT(y)] |=MASK(y))
#define TEST(x,y)(x[BSLOT(y)] & MASK(y))
#define NUMSLOT(n)((n+SIZE-1)/SIZE)

void main()
{
    char arr[NUMSLOT(20)]= {10};
    SET(arr,30);
    if(TEST(arr,10))
        printf("Hello");
    else
        printf("World");
}

Hello

World

No output

Compilation error

Question Number 175

Give the output of the following code snippet :

int Mult(int first,...)
{
    int prod=0, count=0,i=first;
    va_list marker;
    va_start(marker,first);
    while(i!=0)
    {
        prod*=i;
        count++;
        i=va_arg(marker,int);
    }
    va_end(marker);
    return prod;
}

int main(int argc, char *argv[])
{
    printf("%d",Mult(2,3,0));
}

Question Number 176

Give the output of the following code snippet :

struct point
{
    int x;
    int y;
};
void fun(struct point p[])
{
    printf("%d %d\n",p->y,++p[1].y);
}
int main()
{
    struct point p1[] = {1, 2, 3};
    fun(p1);
}

4 0

5 1

2 1

2 0

Question Number 177

Give the output of the following code snippet :

int main()
{
    int a = 10, b = 20,c=5;
    _asm
    {
        mov eax,dword ptr[a]
        mov ebx,dword ptr[b]
        mov ecx,c
        and ecx,ebx
        inc ecx
        mov dword ptr[c],ecx

    }
    printf("%d",c);
}

Question Number 178

Give the output of the following code snippet :

int main()
{
    int a = 10, b = 20,c=5;
    _asm
    {
        inc dword ptr[a]
        mov eax,dword ptr[a]
        mov ebx,dword ptr[b]
        mov ecx,10
        and ecx,ebx
        or  ecx,eax
        mov dword ptr[c],ecx

    }
    printf("%d",c);
}

Question Number 179

Give the output of the following code snippet :

void main()
{
    char *str1="%s";
    char str[]="Hello World";
    printf(str1,str);
}

Hello

Hello World

Garbage value

Runtime error

Question Number 180

Give the output of the following code snippet :

int print(int num,...)
{
    int sum=0, count=0,i,j;
    va_list marker;
    va_start(marker,num);
    for(i=0; i< num; i++)
    {
        i=va_arg(marker,int);
        printf("%d ",i);
    }
    va_end(marker);
    return sum;
}
int main(int argc, char *argv[])
{
    print(3,4,6,-1);
}

3 4 6 -1

4 6 -1 0

Compilation error

Question Number 181

Files Test1.c, Test1.h, Test2.c, Test2.h and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
void func1(int);
extern int arg = 10;


/* Test2.h */
extern int value;
void func(int);

/* Test1.c */

#include"Test2.h"
void func1(int);
void func(int arg)
{
    value = 200;
    func1(arg);
    printf("Output = %d\n",arg+value);
}

/* Test2.c */
#include"Test2.h"

int value = 200;
void func1(int arg)
{
    value = 100;
    printf ( "Output = %d\n", arg+value );

}



/* Test3.c */

#include "Test1.h"
#include "Test2.h"

void main ()
{
    func(arg);
}

Output = 110 Output = 110

Output = 110 Output = 210

Compilation error : Multiple initialization.

Linker error : Unresolved external symbol found.

Question Number 182

Give the output of the following code snippet : Assume the input given is "Hello".

void main()
{
    int i=3;
    int x;
    while(i!=0)
    {
        scanf("%d",&x);
        printf("%d ",x);
        break;
        ungetc(x,stdin);
        i--;
    }
}

Null

Hello

Garbage value

Runtime error

Question Number 183

Give the purpose of the following lines of code :

struct node *root;
root = (struct node *) malloc( sizeof(struct node) );
root->next = NULL;
root->prev = NULL;
root->x = 5;

To create a new node to add to the linked list

To allocate memory for a list of structure objects

To create a new structure

None of the above

Question Number 184

Give the output of the following code snippet :

void main()
{
    int i, sum = 0, j = 5;
    _asm
    {
        mov         dword ptr[i], 0
        jmp         Label1
        Label4 : mov         eax, dword ptr[i]
        add         eax, 1
        mov         dword ptr[i], eax
        Label1 : cmp         dword ptr[i], 5
        jge         Label2

        mov         ecx, dword ptr[i]
        imul        ecx, dword ptr[j]
        add         ecx, dword ptr[sum]
        mov         dword ptr[sum], ecx

        cmp         dword ptr[i], 3
        jne         Label3

        jmp         Label2

        Label3 : jmp         Label4

    }
Label2: 	printf("%d", sum);
}

Question Number 185

While passing a two dimensional array as argument to a function, which of the following parameters is optional?

< NIL>

Number of rows

Number of columns

Both the number of rows and columns

Base address of array

Question Number 186

Give the output of the following code snippet :

void main()
{
    int x=10,y=20,z=0;
    if(x+y>y-x && x-y< y+x)
    {
        x=100;
        y=200;
        z=x*y/x;
    }
    else
        z=300;
    printf("%d %d %d",x,y,z);
}

100 200 300

10 20 300

100 200 200

Compilation error

Question Number 187

Give the output of the following code snippet with the following command line arguments : >Test.c 100 200 300

int main(int argc, char *argv[])
{
    int i=0;
    int sum=0;
    while(i!=argc)
    {
        sum=sum+(argv[i]);
        i++;
    }
    printf("%d %d",argc,sum);
    return 0;
}

3 500

4 600

3 600

Compilation error

Question Number 188

Give the output of the following code snippet :

void main()
{
    int a=10,c=10,b=40;
    _asm
    {
        mov eax,30
        mov ebx,a
        sub eax,dword ptr[b]
        jnc Label2
        and eax,c
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        cmp eax,ecx
        jne Label1
        and eax,50
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

8 10

2 10

10 10

12 10

Question Number 189

Give the output of the following code snippet :

void main()
{
    int a=30,c=50,b=40;
    _asm
    {
        mov eax,30
        mov ebx,dword ptr[c]
        cmp eax,ebx
        jnge Label2
        shl eax,1
        xor eax,dword ptr[a]
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        sub ecx,ebx
        jz Label1
        and eax,ecx
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

30 18

20 10

40 12

10 16

Question Number 190

Give the output of the following code snippet :

void main()
{
    int x=10,y=20,arr[3],i;
    for(i=0; i< 3; i++)
    {
        arr[i]=y++;
        printf("%d  ",arr[i]+x++);
    }
}

10 20 30

30 40 50

30 32 34

30 35 40

Question Number 191

Give the output of the following code snippet :

void func(int (*p)[2],int row,int col)
{
    for(int i=0; i< row; i++)
    {
        for(int j=0; j< col; j++)
        {
            printf("%d ", p[i][j]);
        }
    }
}
int main()
{
    int arry[2][2]= {1,2,3,4};
    func(arry,2,2);
}

1 2 3 4

1 1 1 1

1 3 1 3

Compilation error

Question Number 192

Give the output of the following code snippet :

int main()
{
    int a = 10, b = 20, c;
    _asm
    {
        mov eax,a
        mov ebx,b
        and eax,ebx
        xor eax,b
        mov dword ptr[a],eax
    }
    printf("%d",a);
}

Compilation error

Question Number 193

Give the output of the following code snippet :

struct q
{
    char *name;
};
struct q *ptrary[3];
int main()
{
    struct q *p;
    p->name = "Hello";
    ptrary[0] = p;
    p->name= "World";
    ptrary[1] = p;
    printf("%s\n", ptrary[]->name);
    return 0;
}

Hello

World

Garbage value

Compilation error

Question Number 194

Give the output of the following code snippet :

void main()
{
    int x, *ptr1, y;
    _asm
    {
        mov         dword ptr[x], 14h
        lea         eax, [x]
        mov         dword ptr[ptr1], eax
        mov         ecx, dword ptr[x]
        add         ecx, 1
        mov         dword ptr[x], ecx
        mov         edx, dword ptr[ptr1]
        mov         eax, dword ptr[edx]
        add         eax, dword ptr[x]
        mov         dword ptr[y], eax
        mov         ecx, dword ptr[ptr1]
        add         ecx, 4
        mov         dword ptr[ptr1], ecx
    }
    printf("%d ", y);
}

Question Number 195

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */

extern int value;
void func();

/* Test1.c */

int value;
void func()
{
    printf ( "Output = %d", value );

}

/* Test2.c */

#include "Test1.h"
void main ()
{
    extern int value;
    printf ( "Output = %d\n", value );
}

Output = 0 Output = 0

Output = 0

Compilation error : Undeclared identifier

Linker error : One or more multiply symbol value found

Question Number 196

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b =0, c=0;
    __asm
    {
        push 100
        push 200
        push 500
        mov ebx,300
        mov eax, 400
        call label1
        add esp, 12
        jmp Label2
        label1:
        mov eax, dword ptr[esp + 4]
        mov a, eax
        mov eax, dword ptr[esp + 8]
        mov b, eax
        mov eax, dword ptr[esp + 12]
        add eax,ebx
        mov c,eax
        ret
    }
Label2:
    printf("%d %d %d", a, b, c);

}

500 400 300

500 200 200

500 200 300

500 200 400

Question Number 197

Give the output of the following code snippet : What are the contents of the file 'Test.txt' after the code is executed?

void main()
{
    char x;
    FILE *fp;
    fp=fopen("Test.txt","w+");
    fprintf(fp,"%s","Hello","World");
    fclose(fp);
}

Hello World

Hello

Empty file

Compilation error

Question Number 198

Give the output of the following code snippet :

void main()
{
    char str1[15]="Hello World";
    char str[10]="Yellow";
    char str2[10]="World";
    char *str3;
    str3=strcat(str,str2);
    printf("%s",str3);
}

Hello World

World Yellow

YellowWorld

Runtime error

Question Number 199

Give the output of the following code snippet :

typedef struct
{
    int a;
} Temp;

void main()
{
    Temp t1;
    t1.a=100;
    printf("%d",t1.a);
}

100

Garbage value

Compilation error

Question Number 200

Give the output of the following code snippet :

int main()
{
    int a = 10, b = 20,c=5;
    _asm
    {
        mov eax,dword ptr[a]
        mov ebx,dword ptr[b]
        mov ecx,c
        or ebx,c
        and ecx,ebx
        mov dword ptr[c],ecx

    }
    printf("%d",c);
}

Question Number 201

Give the output of the following code snippet :

void main()
{
    int a = 1;
    _asm
    {
        cmp         dword ptr[a], 0
        jne         Label1

        mov         dword ptr[a], 64h

        jmp         Label2

        Label1 : mov         dword ptr[a], 0C8h

    }
Label2:	printf("%d", a);
}

100

200

Question Number 202

Give the output of the following code snippet :

int main()
{
    float x=10.00;
    float y=10.001;
    if( x == y)
        printf("%.0f",x++ + ++y);
    else
        printf("%.0f",--y-++x);
}

-2

-3

Question Number 203

Give the output of the following code snippet who's solution configuration has been set to the DEBUG mode :

int main()
{
    int a = 10;
    int b = 20;
    int c = 30;
    _asm
    {
        mov eax, 10
        push eax
        push a
        push b
        push c
        mov ebx, dword ptr[esp]
        mov a, ebx
        pop a
        add esp,12


    }
    printf("%d %d %d", a, b, c);
}

30 20 10

10 20 30

30 20 30

Runtime error

Question Number 204

Give the output of the following code snippet :

void main()
{
    char a[10][6] = {"Hola","Hello","Jello"};
    printf("%s", a+1);
}

Hola

Hello

Jello

Compilation error

Question Number 205

Give the output of the following code snippet :

void main()
{
    char str1[15]="Hello World";
    char str[10]="Yellow";
    char *str2="World";
    char *str3;
    str3=strcat(str,str2);
    printf("%s",str3);
}

Hello World

World Yellow

YellowWorld

Runtime error

Question Number 206

Give the output of the following code snippet :

void func(char **a)
{
    char *str=*(a+4);
    printf("%d  %s",sizeof(*(a+4)),str);
}
void main()
{
    char *str[15]= {"This","is","a","Hello","World","Program"};
    char *x;
    x=str[4];
    str[4]=str[5];
    str[5]=x;
    func(str);
}

6 Program

4 Program

5 World

Runtime error

Question Number 207

Give the importance of the following line of code in the given program : temp2->next=temp3;

void ReverseList()
{
    node *temp1,*temp2,*temp3;
    temp1=Head;
    temp2=NULL;
    while(temp1!=NULL)
    {
        temp3=temp2;
        temp2=temp1;
        temp1=temp1->next;
        temp2->next=temp3;
    }
    Head=temp2;
}

To store the address of the last node in the list.

To store the address of the first node in the list.

To swap two links of the nodes.

To reverse the links of the nodes

Question Number 208

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b =0, c=0,d=0;
    __asm
    {
        push 10
        push 20
        push 50
        push 70
        mov ebx,30
        mov eax, 40
        mov ecx,60
        call label1
        add eax,ebx
        mov a,eax
        mov c,ebx
        add esp, 16
        jmp Label2
        label1:
        mov eax, dword ptr[esp + 4]
        mov a, eax
        add a, ebx
        mov eax, dword ptr[esp + 12]
        mov b, eax
        mov eax, dword ptr[esp + 20]
        xor edx,ecx
        mov c,eax
        sub edx,ecx
        or edx,10
        mov d,edx
        ret
    }
Label2:
    printf("%d %d %d %d", a, b, c, d);

}

30 20 40 10

30 20 30 10

40 50 60 20

50 30 40 10

Question Number 209

Give the output of the following code snippet :

int main()
{
    int arr[] = {1, 2, 3, 4, 5};
    int *p = arr;
    ++*p;
    printf("%d", (*p)+3);
}

Question Number 210

Give the output of the following code snippet :

void func(int arr[])
{
    *arr++;
    printf("%d ",(arr[0]));
}

int main()
{

    int n=10;
    int arry[n]= {1,2,3,4,5,6};
    func(arry);
}

Compilation error

Question Number 211

Give the output of the following code snippet :

int func()
{
    int **p;
    int *q;
    int x=100;
    p=&q;
    q=&x;
    return **x;
}
void main()
{
    int (*f)();
    f=func;
    printf("%d",f());
}

100

Garbage value

Compilation error

Question Number 212

Give the output of the following code snippet :

typedef void v;
v func(int,int);
void main()
{
    func(10,10);
}
v func(int x,int y)
{
    printf("%d",x+y);
}

Garbage value

Compilation error

Question Number 213

Give the output of the following code snippet :

void main()
{
    char str1[12]="Hello world";
    char *str="Yellow World";
    char *x,*y;
    strcpy(str1,str);
    printf("%s",str1);
}

Hello world

Yellow World

Garbage value

Runtime error

Question Number 214

Give the output of the following code snippet :

int main()
{
    int a = 20, b = 10,c=2;
    _asm
    {
        mov eax,esp
        push ebx
        mov ecx,esp
        sub eax,ecx
        mov b,eax
        pop ebx
    }
    printf("%d",b);
}

-4

Question Number 215

Give the output of the following code snippet :

int main()
{
    int i=10,*p,*q;
    p=&i;
    *q=*p;
    printf("%d",*q);
}

Address of i

Garbage value

Compilation error.

Question Number 216

Give the output of the following code snippet run with the following commandline arguments: >Testfile.c one

/* Testfile.c */

int main(char *argv[])
{
    while(--argc>0)
        printf("%s ", *++argv+1);
    return 0;
}

one

Testfile.c

Compilation error

Question Number 217

Give the output of the following code snippet :

struct Vehicle
{
    int Id;
    char *name;

    struct Car
    {
        int Id;
        char *name;
    } Cobj;
};

void main()
{
    struct Vehicle Vobj[5];
    Vobj[0].Cobj.Id=1001;
    printf("%d",Vobj[0].Cobj.Id);
}

1001

Garbage value

Compilation error

Question Number 218

Give the output of the following code snippet :

int main()
{
    int i, *p, q;
    _asm
    {
        mov         dword ptr[i], 1Fh
        lea         eax, [i]
        mov         dword ptr[p], eax
        mov         ecx, dword ptr[p]
        mov         edx, dword ptr[ecx]
        sub         edx, 0Fh
        mov         eax, dword ptr[p]
        mov         dword ptr[eax], edx
        mov         ecx, dword ptr[p]
        mov         edx, dword ptr[ecx]
        mov         dword ptr[q], edx
        mov         eax, dword ptr[p]
        sub         eax, 6
        mov         dword ptr[p], eax
    }
    printf("%d", q);
}

Question Number 219

Give the output of the following code snippet :

int main()
{
    int a = 2000;
    int b = 1000;

    int c = a >> 3;
    int d = b >> 2;

    if(c == d)
        printf("True");
    else
        printf("False");

}

True

False

Compilation error

Runtime error

Question Number 220

Give the output of the following code snippet :

void main()
{
    char *str1="%s";
    char str[]="Hello World";
    printf(str1,str+1);
}

ello World

Hello World

Garbage value

Runtime error

Question Number 221

Give the output of the following code snippet :

struct student
{
    int age;
    char name[25];
};
int main()
{
    struct student c[] = { {12, "Jenn"},
        {13, "Abby"}
    };

    printf("%s ", *(c+1).name);
    return 0;
}

Jenn

Abby

Garbage value

Compilation error

Question Number 222

Give the output of the following code snippet :

void func(int p[],int count)
{
    for(int i=0; i< count; i++)
        printf("%d ", p[i]);
}
int main()
{
    int arry[5]= {1,2,3,4,5};
    func(arry,5);
}

1 2 3 4 5

0 0 0 0 0

Garbage values

Compilation error

Question Number 223

Give the output of the following code snippet :

void main()
{
    int a=10,b=20,c=30;
    unsigned int d=2;
    int x=10,y=20,z=30;
    x=a | b >> c || d;
    y >>= 3;
    z = y>> 2;
    printf("%d %d %d",x,y,z);
}

3 3 1

0 8 1

1 2 0

Compilation error

Question Number 224

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */

int value = 300;

/* Test1.c */

extern int value;
void func()
{
    int value = 200;
    printf ( "Output = %d", value );

}

/* Test2.c */

#include"Test1.h"

void func() {};
void main ()
{
    printf ( "Output = %d\n", value );
    func();

}

Output = 300 Output = 200

Output = 200 Output = 100

Compilation error : Identifier not found.

Linker error : One or more multiply defined symbols found

Question Number 225

Give the output of the following code snippet :

void main()
{
    int i = 0, a = 10;
    _asm
    {
        Label2:  cmp         dword ptr[i], 0
        jle         Label1
        mov         eax, dword ptr[a]
        add         eax, 5
        mov         dword ptr[a], eax
        Label1 : mov         ecx, dword ptr[i]
        add         ecx, 2
        mov         dword ptr[i], ecx
        cmp         dword ptr[i], 6
        jne         Label2
    }

    printf("%d", a);
}

Question Number 226

Give the output of the following code snippet :

void main()
{
    int ch=0,sum=0,i;
    int num=3;
    for (i=0; i< 4; i++)
    {
        printf("%d",(num << i & 1 <<  3)? 0 : 1);
    }
}

0011

0001

0111

1100

Question Number 227

Give the output of the following code snippet :

int main()
{

    int (*p)[5];
    int a[][5]= {1,2,3,4,5,6};
    p=a;
    int *q;
    q=(int*)a;
    printf("%d %d",**p+3,*q+5);

}

3 5

4 6

5 0

2 5

Question Number 228

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b =0, c=0,d=0;
    __asm
    {
        push 10
        push 20
        mov ebx,30
        mov eax, 40
        mov ecx,60
        push 50
        call label1
        mov a,eax
        mov b,ebx
        add esp, 12
        jmp Label2
        label1:

        mov eax, dword ptr[esp + 4]
        mov a, eax
        add a, ebx
        mov eax, dword ptr[esp + 8]
        mov b, eax
        mov eax, dword ptr[esp + 12]
        or edx,ecx
        mov c,eax
        sub edx,10
        mov d,edx
        ret
    }
Label2:
    printf("%d %d %d %d", a, b, c, d);

}

10 20 60 20

10 30 62 20

10 62 10 60

10 30 10 50

Question Number 229

Give the output of the following code snippet :

int main()
{
    enum Days {SUN,MON,TUES,WED,THURS,FRI,SAT};
    typedef enum Days EDays;
    EDays day=MON+TUES;
    printf("%d",day);
}

Compilation error

Question Number 230

Give the output of the following code snippet :

void main()
{
    typedef unsigned int uint;
    typedef float fl;
    uint x=100,y=200;
    fl p=100.25,q=200.50;
    unsigned int a=300,b=400;
    int z = x+y-a/b;
    float w= q/p;
    float v=z/w;
    printf("%.2f",v);
}

300.00

150.00

100.00

Compilation error

Question Number 231

Give the output of the following code snippet : Assume the contents of the file 'Test.txt' is "Hello World".

void main()
{
    char x;
    int count=0;
    FILE *fp,*fp1;
    fp=fopen("Test.txt","r");
    fseek(fp,10,SEEK_SET);
    fputc('S',fp);
    fclose(fp);
    fp1=fopen("Test.txt","r");
    while((x=getc(fp1))!=EOF)
    {
        printf("%c",x);
        count++;
    }
    printf("  %d",count);
    fclose(fp1);
}

Hello WorldS 12

Hello World 11

Hello World 10

Compilation error

Question Number 232

Give the output of the following code snippet : What are the contents of the file 'Test.txt' after the code is executed?

void main()
{
    char x;
    FILE *fp;
    fp=fopen("Test.txt","w+");
    fprintf(fp,"%s %s","Hello","World");
    fclose(fp);
}

Hello World

Hello

Empty file

Compilation error

Question Number 233

Give the output of the following code snippet :

void main()
{
    int a=0x10,b=20,c=30,d;
    int x,y,z;
    x=a & b && c;
    y=a | b || c;
    z=x && y | c;
    printf("%d %d %d",x,y,~z);
}

1 10 12

11 16 -19

1 1 -2

11 16 -8

Question Number 234

Give the output of the following code snippet :

int main()
{
    int a[][] = {{1, 2, 3}, {5, 2, 3}};
    printf("%d",*a[0]+1);
}

Garbage value

Compilation error

Question Number 235

Files Test1.c, Test1.h, Test2.c, Test2.h and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
extern int value;

void func1();

/*  Test2.h */
void func()

/* Test1.c */
#include "Test1.h"
int value = 100;
void func()
{
    printf("Output = %d\n",value);
}




/* Test2.c */
#include "Test1.h"

void func1()
{
    printf ( "Output = %d\n", ++value );

}


/* Test3.c */

#include "Test2.h"

void main ()
{
    func();
    func();
}

Output = 100 Output = 200

Output = 201 Output = 201

Compilation error : Undeclared identifier

Linker error : Unresolved external symbol found.

Question Number 236

Give the output of the following code snippet :

struct node
{
    int x;
    struct node *next;
}*Head;

void SortList()
{
    node *temp1,*temp2,*temp3,*temp4,*temp5;
    temp4=NULL;
    while(temp4!=Head->next)
    {
        temp3=temp1=Head;
        temp2=temp1->next;
        while(temp1!=temp4)
        {
            if(temp1->x <  temp2->x)
            {
                if(temp1==Head)
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    Head = temp2;
                    temp3=temp2;
                }
                else
                {
                    temp5=temp2->next;
                    temp2 -> next=temp1;
                    temp1->next=temp5;

                    temp3->next = temp2;
                    temp3=temp2;
                }
            }
            else
            {
                temp3=temp1;
                temp1=temp1->next;
            }
            temp2=temp1->next;
            if(temp2 == temp4)
                temp4=temp1;
        }
    }
}
void AddNode( int num )
{
    struct node *temp,*temp2;
    if(Head==NULL)
    {
        temp2=(struct node *)malloc(sizeof(struct node));
        temp2->x=num;
        temp2->next=NULL;
        Head=temp2;
    }
    else
        temp=Head;
    while(temp->next!=NULL)
        temp=temp->next;
    temp2=(struct node *)malloc(sizeof(struct node));
    temp2->x=num;
    temp2->next=NULL;
    temp->next=temp2;
}

void  Display()
{
    struct node *r;
    r=Head;
    while(r->next!=NULL)
    {
        printf("%d ",r->x);
        r=r->next;
    }
    printf("\n");
}

int main()
{
    AddNode(10);
    AddNode(5);
    AddNode(6);
    SortList();
    AddNode(20);
    AddNode(3);
    AddNode(100);
    AddNode(50);

    Display();
}

10 5 6 20 3 100 50

10 6 5 20 3 100

3 20 100 50 10 6

Compilation error

Question Number 237

Give the output of the following code snippet :

#define row 2
#define col 2
void main()
{
    int (*arr)[col];
    arr=(int (*)[col])malloc(sizeof(row*sizeof(*arr)));
    for(int i=0; i< row; i++)
        for(int j=0; i< col; i++)
            arr[i][j]=i+j;
    for(int i=0; i< col+row-1; i++)
        printf("%d ",*arr[i]);
}

0 1 2 3

0 1 0

1 1 2 4

1 2

Question Number 238

Give the output of the following code snippet :

int main()
{
    int a[4] = {1, 2, 3, 4};
    int *ptr = &a[2];
    *ptr = *ptr * 1;
    printf("%d\n", *ptr);
}

Garbage value

Compilation error

Question Number 239

Give the output of the following code snippet :

typedef int(*fptr)(int a);
typedef struct
{
    int a;
    fptr fpt[10];
} fp;

int fun(int a)
{
    int sum = 0;
    _asm
    {
        mov         dword ptr[a], 24h
        mov         eax, dword ptr[a]
        add         eax, 0Ah
        mov         dword ptr[a], eax
        mov         ecx, dword ptr[sum]
        and         ecx, dword ptr[a]
        mov         dword ptr[sum], ecx
    }
    printf("%d", sum);
    return 0;
}

int _tmain()
{
    fp myS;
    myS.fpt[1] = fun;
    _asm
    {
        push        5Ah
        mov         ecx, 4
        shl         ecx, 0
        mov         edx, dword ptr[ebp + ecx - 28h]
        call        edx
        add         esp, 4
    }
}

Question Number 240

Files Test1.c, Test1.h, Test2.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */

void func();

/* Test1.c */

#include "Test1.h"

static int value=200;
void func()
{
    int value = 300;
    printf ( "Output = %d\n", value );

}



/* Test2.c */
#include "Test1.h"

static int value= 100;
void main ()
{
    func();
    printf ( "Output = %d\n", value );
}

Output = 100 Output = 200

Output = 300 Output = 100

Compilation error : Redefinition of value.

Linker error : Redefinition of value.

Question Number 241

Give the output of the following code snippet :

void main()
{
    double a=100.25;
    double b=200.25;
    double c = ((a) == (b) ? (++a) : (--b));
    double d= ((a) > (b) ? (a--) : (--b));

    printf("%.2f %.2f",c,d);
}

201 .25 100.25

198.25 199.25

199.25 198.25

200.25 201.25

Question Number 242

Give the output of the following code snippet :

int main()
{
    char *p[1] = {"Hello"};
    printf("%s", (p)[1]);
    return 0;
}

No output

Null

Compilation error

Garbage value

Question Number 243

Give the output of the following code snippet :

int main()
{
    int i, *p, q;
    _asm
    {
        mov         dword ptr[i], 3
        lea         eax, [i]
        mov         dword ptr[p], eax
        mov         ecx, dword ptr[p]
        mov         edx, dword ptr[ecx]
        add         edx, 2
        mov         eax, dword ptr[p]
        mov         dword ptr[eax], edx
        mov         ecx, dword ptr[p]
        mov         edx, dword ptr[ecx]
        add         edx, 0Ah
        mov         dword ptr[q], edx
        mov         eax, dword ptr[p]
        add         eax, 4
        mov         dword ptr[p], eax
    }
    printf("%d", q);
}

Question Number 244

Give the output of the following code snippet :

struct point
{
    int x;
    int y;
};
void fun(struct point p[])
{
    printf("%d %d\n",p->y,++p[1].y);
}
int main()
{
    struct point p1[] = {1, 2, 3, 4};
    fun(p1);
}

4 5

5 5

2 5

2 4

Question Number 245

Give the output of the following code snippet with the following command line arguments : >Test.c 100 200 300

int main(int argc, char *argv[])
{
    int i=strlen(argv[3]);
    int sum=0;
    do
        printf("%d ",atoi(argv[argc])+atoi(argv[--argc])+atoi(argv[argc]));
    while(argc);
}

900 600 300 0

600 300 0 -300

700 500 300 100

Compilation error

Question Number 246

Give the output of the following code snippet :

int sum(int x, int y)
{
    _asm
    {
        mov         eax,dword ptr [x]
        sub         eax,dword ptr [y]
    }
}
void main()
{
    int(*fptr)(int a, int b);
    int a = 0;
    fptr=sum;
    _asm
    {
        push        16h
        push        0Dh
        call        dword ptr [fptr]
        add         esp,8
        mov         dword ptr [a],eax
    }
    printf("%d", a);
}

-9

Question Number 247

Give the output of the following code snippet :

int main()
{
    char *a[1] = {"Hello"};
    printf("%s", *a);
    return 0;
}

Hello

Address of a

Compilation error

Question Number 248

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])
{
    int a = 0, b = 0;
    __asm
    {
        mov eax,Label1
        call eax
        mov ebx,Label2
        jmp ebx
        Label1 :
        mov a, 100
        ret
        Label2 : mov b, 200
    }
    printf("%d %d", a,b);
}

0 0

100 0

0 200

100 200

Question Number 249

Give the output of the following code snippet :

void main()
{
    int a=20,c=10,b=30;
    _asm
    {
        mov eax,2
        mov ebx,a
        and eax,ebx
        jz Label2
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        sub eax,ecx
        jz Label1
        and eax,dword ptr[c]
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

30 10

20 8

30 8

20 10

Question Number 250

Give the output of the following code snippet :

typedef struct student
{
    char a[10];
} stu;
void main()
{
    struct stu st;
    st.a = "Jenn";
    printf("%s", st.a);
}

Jenn

Garbage Value

Null

Compilation error

Question Number 251

Give the output of the following code snippet :

int main()
{
    int *ptr=(int *)1000;
    int a=10;
    ptr=&a;
    *ptr=*ptr+1;
    printf("%d",*ptr);
    return 0;
}

1001

Compilation error

Question Number 252

Give the output of the following code snippet :

void main()
{
    int a=10,c=50,b=30;
    _asm
    {
        mov eax,5
        mov ebx,a
        sub eax,dword ptr[a]
        jc Label2
        xor eax,dword ptr[c]
        mov b,eax
        Label2:
        mov ecx,dword ptr[a]
        cmp eax,ecx
        je Label1
        or eax,b
        mov c,eax

    }
Label1:	printf("%d %d",b,c);
}

20 10

20 -8

30 -1

10 -10

Question Number 253

Give the output of the following code snippet :

struct student
{
    char *name;
} s;
struct student fun(void)
{
    s.name = "Jenn";
    return s;
}
void main()
{
    struct student m = fun();
    printf("%s ", m.name);
    struct student p=m;
    printf("%s\n", p.name);
}

Jenn GarbageValue

Garbage Value Jenn

Jenn Jenn

Compilation error

Question Number 254

Give the output of the following code snippet :

int _tmain(int argc, _TCHAR* argv[])

{
    int a = 0, b = 0, c=0,d=0;
    __asm
    {
        push 10
        push 20
        push 30
        push 40
        mov ebx,30
        push ebx
        mov eax, 40
        mov ecx,label1
        call ecx
        add esp,0x10
        mov edx,Label2
        mov dword ptr[c],edx
        jmp dword ptr[c]
        label1:
        mov eax, dword ptr[esp + 4]
        mov a, eax
        mov eax, dword ptr[esp + 8]
        mov b, eax
        mov eax, dword ptr[esp + 12]
        mov c,eax
        mov eax, dword ptr[esp + 16]
        mov d,eax
        ret

        Label2:mov c,ebx
        mov b,eax

    }
    printf("%d %d %d %d", a, b, c, d);

}

40 30 20 10

10 20 30 40

30 20 10 0

30 20 30 20

Question Number 255

Files Test1.c, Test1.h, Test2.c, Test2.h and Test3.c are in same directory with the content given below. All files are in the same project of a console application. Predict the output of the program.

/*  Test1.h */
void func1();


/* Test2.h */
static int value;
void func();

/* Test1.c */

#include"Test2.h"

void func()
{
    value = 200;
    func1();
    printf("Output = %d\n",++value);
}

/* Test2.c */
#include"Test2.h"

void func1()
{
    value  = 200;
    printf ( "Output = %d\n", ++value );
    func();

}



/* Test3.c */

#include "Test1.h"
#include "Test2.h"

void main ()
{
    func();

}

Output = 201

Output = 201 Output = 200

Compilation error : Unidentified identifier

Linker error : Unresolved external symbol found.