[C] Struct, Union

/*------------------------------------------------------------------------------------------

@ Pratice C laguage

Author           : SAM

Created          : 28-03-2017

Modified         : 28-03-2017

Language/ver     : C in MSVS2015

Description     : Practice

KEYWORD : Struct, Union

------------------------------------------------------------------------------------------*/

#include<stdio.h>

union u_data {

int d1;

double d2;

char d3;

};

int main(void) {

union u_data data;

data.d2 = 3.3;

printf("%d, %f, %c\n", data.d1, data.d2, data.d3);

data.d1 = 2;

printf("%d, %f, %c\n", data.d1, data.d2, data.d3);

data.d3 = 'a';

printf("%d, %f, %c\n", data.d1, data.d2, data.d3);

return 0;

}