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Welcome to the Structures and Unions MCQs Page

Dive deep into the fascinating world of Structures and Unions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Structures and Unions, a crucial aspect of C Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Structures and Unions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C Programming.

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Check out the MCQs below to embark on an enriching journey through Structures and Unions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Structures and Unions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Structures and Unions MCQs | Page 17 of 27

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Discuss
Answer: (b).All of them let you define new data types
Q162.
What will be 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;
}
Discuss
Answer: (a).3, 2, 515
Q163.
What will be the output of the program ?
#include<stdio.h>

int main()
{
    union var
    {
        int a, b;
    };
    union var v;
    v.a=10;
    v.b=20;
    printf("%d\n", v.a);
    return 0;
}
Discuss
Answer: (b).20
Q164.
What will be the output of the program ?
#include<stdio.h>

int main()
{
    struct value
    {
        int bit1:1;
        int bit3:4;
        int bit4:4;
    }bit={1, 2, 13};

    printf("%d, %d, %d\n", bit.bit1, bit.bit3, bit.bit4);
    return 0;
}
Discuss
Answer: (c).-1, 2, -3
Q165.
What will be the output of the program in 16 bit platform (Turbo C under DOS) ?
#include<stdio.h>

int main()
{
    struct value
    {
        int bit1:1;
        int bit3:4;
        int bit4:4;
    }bit;
    printf("%d\n", sizeof(bit));
    return 0;
}

a.

1

b.

2

c.

4

d.

9

Discuss
Answer: (b).2
Q166.
What will be the output of the program ?
#include<stdio.h>

int main()
{
    enum days {MON=-1, TUE, WED=6, THU, FRI, SAT};
    printf("%d, %d, %d, %d, %d, %d\n", MON, TUE, WED, THU, FRI, SAT);
    return 0;
}
Discuss
Answer: (d).-1, 0, 6, 7, 8, 9
Q167.
What will be the output of the program ?
#include<stdio.h>

int main()
{
    enum status {pass, fail, absent};
    enum status stud1, stud2, stud3;
    stud1 = pass;
    stud2 = absent;
    stud3 = fail;
    printf("%d %d %d\n", stud1, stud2, stud3);
    return 0;
}
Discuss
Answer: (c).0, 2, 1
Q168.
What will be the output of the program ?
#include<stdio.h>

int main()
{
    int i=4, j=8;
    printf("%d, %d, %d\n", i|j&j|i, i|j&j|i, i^j);
    return 0;
}
Discuss
Answer: (a).12, 12, 12
Q169.
What will be the output of the program in Turbo C (under DOS)?
#include<stdio.h>

int main()
{
    struct emp
    {
        char *n;
        int age;
    };
    struct emp e1 = {"Dravid", 23};
    struct emp e2 = e1;
    strupr(e2.n);
    printf("%s\n", e1.n);
    return 0;
}
Discuss
Answer: (b).DRAVID
Q170.
What will be the output of the program in 16-bit platform (under DOS)?
#include<stdio.h>

int main()
{
    struct node
    {
        int data;
        struct node *link;
    };
    struct node *p, *q;
    p = (struct node *) malloc(sizeof(struct node));
    q = (struct node *) malloc(sizeof(struct node));
    printf("%d, %d\n", sizeof(p), sizeof(q));
    return 0;
}
Discuss
Answer: (a).2, 2

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