Questions and answers for exam Preparation

MCQs

Total Questions : 35 | Page 2 of 4 pages

Question 11.

Point out the error in the following program.

#include<stdio.h>
#include<stdlib.h>
int main()
{
static char *p = (char *)malloc(10);
return 0;
}

Error: Lvalue required
Error: Rvalue required
Error: invalid *p declaration
No error

Discuss Question

Answer: Option D. -> No error

Question 12.

Point out the error in the following program (in Turbo C under DOS).

#include<stdio.h>
union emp
{
int empno;
int age;
};
int main()
{
union emp e = {10, 25};
printf("%d %d", e.empno, e.age);
return 0;
}

Error: Lvalue required
Error: Rvalue required
Error: cannot initialize more than one union member.
No error

Discuss Question

Answer: Option C. -> Error: cannot initialize more than one union member.

Question 13.

What will be the output of the program?

#include<stdio.h>
int main()
{
struct s1
{
char *z;
int i;
struct s1 *p;
};
static struct s1 a[] = {{"Nagpur", 1, a+1} , {"Chennai", 2, a+2} ,
{"Bangalore", 3, a} };
struct s1 *ptr = a;
printf("%s,", ++(ptr->z));
printf(" %s,", a[(++ptr)->i].z);
printf(" %s", a[--(ptr->p->i)].z);
return 0;
}

Nagpur, Chennai, Bangalore
agpur, hennai, angalore
agpur, Chennai, angalore
agpur, Bangalore, Bangalore

Discuss Question

Answer: Option D. -> agpur, Bangalore, Bangalore

Question 14.

What will be the output of the program in Turbo C?

#include<stdio.h>
int main()
{
char near *near *ptr1;
char near *far *ptr2;
char near *huge *ptr3;
printf("%d, %d, %d\n", sizeof(ptr1), sizeof(ptr2), sizeof(ptr3));
return 0;
}

4, 4, 8
4, 4, 4
2, 4, 8
2, 4, 4

Discuss Question

Answer: Option D. -> 2, 4, 4

Question 15.

What will be the output of the program?

#include<stdio.h>
int main()
{
char huge *near *ptr1;
char huge *far *ptr2;
char huge *huge *ptr3;
printf("%d, %d, %d\n", sizeof(ptr1), sizeof(ptr2), sizeof(ptr3));
return 0;
}

4, 4, 8
2, 4, 4
4, 4, 2
2, 4, 8

Discuss Question

Answer: Option B. -> 2, 4, 4

Question 16.

What will be the output of the program under DOS?

#include<stdio.h>
int main()
{
char huge *near *far *ptr1;
char near *far *huge *ptr2;
char far *huge *near *ptr3;
printf("%d, %d, %d\n", sizeof(ptr1), sizeof(**ptr2), sizeof(ptr3));
return 0;
}

4, 4, 4
4, 2, 2
2, 8, 4
2, 4, 8

Discuss Question

Answer: Option B. -> 4, 2, 2

Question 17.

What will be the output of the program?

#include<stdio.h>
typedef void v;
typedef int i;
int main()
{
v fun(i, i);
fun(2, 3);
return 0;
}
v fun(i a, i b)
{
i s=2;
float i;
printf("%d,", sizeof(i));
printf(" %d", a*b*s);
}

2, 8
4, 8
2, 4
4, 12

Discuss Question

Answer: Option D. -> 4, 12

Question 18.

What will be the output of the program?

#include<stdio.h>
int main()
{
char huge *near *far *ptr1;
char near *far *huge *ptr2;
char far *huge *near *ptr3;
printf("%d, %d, %d\n", sizeof(ptr1), sizeof(*ptr2), sizeof(**ptr3));
return 0;
}