Bit Fields

Bit Fields

Easy Questions

C Programming

C Introduction
Basic Syntax
Data Types
Variables
Constants
Storage Classes
Operators
C Enumeration (Enum)
Decision Making
Loops
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Arrays
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Strings
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Bit Fields
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Command Line Arguments
C-Library-Functions
  1. What will be the output of the following C code?
    #include <stdio.h>
        union Un
        {
            struct
            {
                unsigned char ch : 2;
                unsigned int n : 2;
            }s;
            int ch;
        };
        int main()
        {
            union Un u = {2};
            printf("%d\n", u.s.ch);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    2

  1. What will be the output of the following C code?
    #include <stdio.h>
        union N
        {
            struct
            {
                unsigned char c : 2;
                unsigned int num : 2;
            }M;
            int c;
        };
        int main()
        {
            union N n.M = {2};
            printf("%d\n", n.M.c);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    Compilation Error

    main.c: In function ‘main’:
    main.c:13:18: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘.’ token
             union N n.M = {2};
                      ^
    main.c:13:18: error: expected expression before ‘.’ token
    main.c:14:24: error: ‘n’ undeclared (first use in this function)
             printf("%d\n", n.M.c);
                            ^
    main.c:14:24: note: each undeclared identifier is reported only once for each function it appears in

  1. What will be the output of the following C code?
    #include <stdio.h>
        struct Stru
        {
            unsigned int ch : 2;
            unsigned int n : 2;
        };
        int main()
        {
            struct Stru s;
            s.ch = 3;
            s.n = 1;
            printf("%d\n", sizeof(s));
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    4

  1. What will be the output of the following C code?
    #include <stdio.h>
        struct St
        {
            unsigned int c : 2;
            unsigned int n : 2;
        };
        int main()
        {
            struct St s;
            s.c = 13;
            s.n = 10;
            printf("%d\n", s.n);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    2

  1. What will be the output of the following C code?
    #include <stdio.h>
        struct Stru
        {
            unsigned int x : 7;
            unsigned int y : 2;
        };
        int main()
        {
            struct Stru s;
            s.x = 110;
            s.y = 2;
            printf("%d\n", s.x);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: E

    None of these