Example for Turbo C++

/**********************************************************
 Statement - Find the size of a union
 Programmer - Shanmuga Priya
 Written For - https://Tamilevergreen.blogspot.in
 **********************************************************/

#include <stdio.h>
#include <conio.h>

void main()
 {
 union sample
 {
 int m;
 float n;
 char ch;
 };
 
 union sample u;
 clrscr();
 
 printf("The size of union =%d\n", sizeof(u));
 
 /*initialization */
 
 u.m = 25;
 printf("%d %f %c\n", u.m, u.n,u.ch);
 
 u.n = 0.2;
 printf("%d %f %c\n", u.m, u.n,u.ch);
 
 u.ch = 'p';
 printf("%d %f %c\n", u.m, u.n,u.ch);
 
 getch();
 } /*End of main() */

/*-----------------------------------------
 Output
 The size of union =4
 25 12163373596672.000000  
 -13107 0.200000 Õ
 -13200 0.199999 p
 ------------------------------------------*/