C Programming

Find Output of Program

1. 

What is the output of the program in Turbo C (in DOS 16-bit OS)? 

#include<stdio.h>
int main()
{
    char *s1;
    char far *s2;
    char huge *s3;
    printf("%d, %d, %d\n", sizeof(s1), sizeof(s2), sizeof(s3));
    return 0;
}


A. 2, 4, 6
B. 4, 4, 2
C. 2, 4, 4
D. 2, 2, 2
2. 

What is the output of the program 

#include<stdio.h>
int main()
{
    struct emp
    {
        char name[20];
        int age;
        float sal;
    };
    struct emp e = {"Tiger"};
    printf("%d, %f\n", e.age, e.sal);
    return 0;
}

A. 0, 0.000000
B. Garbage values
C. Error
D. None of above
3. 

What is the output of the program? 

#include<stdio.h>
int main()
{
    extern int a;
    printf("%d\n", a);
    return 0;
}
int a=20;


A. 20
B. 0
C. Garbage Value
D. Error
4. 

What is the output of the program 

#include<stdio.h>
int main()
{
    extern int fun(float);
    int a;
    a = fun(3.14);
    printf("%d\n", a);
    return 0;
}
int fun(int aa)
{
	return (int)++aa;
}


A. 0
B. 3.14
C. 4
D. 3
E. Compile Error
5. 

What is the output of the program? 

#include<stdio.h>
int main()
{
    union a
    {
        int i;
        char ch[2];
    };
    union a u;
    u.ch[0] = 3;
    u.ch[1] = 2;
    printf("%d, %d, %d\n", u.ch[0], u.ch[1], u.i);
    return 0;
}


A. 3, 2, 5
B. 3, 2, 515
C. 515, 2, 3
D. None of these
6. 

What is the output of the program 

#include<stdio.h>
int main()
{
    int a[5] = {2, 3};
    printf("%d, %d, %d\n", a[2], a[3], a[4]);
    return 0;
}


A. Garbage Values
B. 3, 2, 2
C. 0, 0, 0
D. 2, 3, 3
7. 

What will be the output of the program? 

#include<stdio.h>
int X=40;
int main()
{
    int X=20;
    printf("%d\n", X);
    return 0;
}


A. 20
B. 40
C. Error
D. No Output
8. 

What is the output of the program 

#include<stdio.h>
int main()
{
    int x = 10, y = 20, z = 5, i;
    i = x < y < z;
    printf("%d\n", i);
    return 0;
}


A. 0
B. 1
C. Error
D. None of these
9. 

In the following program how long will the for loop get executed? 

#include<stdio.h>
int main()
{
    int i=5;
    for(;scanf("%s", &i); printf("%d\n", i));
    return 0;
}


A. The for loop would not get executed at all
B. The for loop would get executed only once
C. The for loop would get executed 5 times
D. The for loop would get executed infinite times
10. 

What will be the output of the program? 

#include<stdio.h>
int main()
{
    int X=40;
    {
        int X=20;
        printf("%d ", X);
    }
    printf("%d\n", X);
    return 0;
}


A. 40 40
B. 20 40
C. 20
D. Error

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