What is the output of this C code? #include union utemp { int a; double b; char c; }u; int main() { u.c = 'A'; u.a = 1; printf("%d", sizeof(u)); } The output will be: (Assuming size of char = 1, int = 4, double = 8)

C Programming Language Union in C Language

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Q: What is the output of this C code?


    #include <stdio.h>
    union utemp
    {
        int a;
        double b;
        char c;
    }u;
    int main()
    {
        u.c = 'A';
        u.a = 1;
        printf("%d", sizeof(u));
    }

The output will be: (Assuming size of char = 1, int = 4, double = 8)

A 1
B 4
C 8
D 13
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Union is an user defined datatype in C programming language. It is a collection of variables of different datatypes in the same memory location. We can define a union with many members, but at a given point of time only one member can contain a value. Unions can be very handy when you need to talk to peripherals through some memory mapped registers.

Q: What is the output of this C code? #include <stdio.h> union utemp { int a; double b; char c; }u; int main() { u.c = 'A'; u.a = 1; printf("%d", sizeof(u)); } The output will be: (Assuming size of char = 1, int = 4, double = 8)

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Q: What is the output of this C code?
The output will be: (Assuming size of char = 1, int = 4, double = 8)