Program to demonstrate use of union

#include<stdio.h>

main()

{

          union a

          {

                 short int i;

                   char ch[2];

          };

          union a key;

          key.i=512;

          clrscr();

          printf("key.i=%d\n",key.i);

          printf("key.ch[0]=%d\n",key.ch[0]);

          printf("key.ch[1]=%d\n",key.ch[1]);

          return 0;

}