#include <stdio.h>

int main(void) 
{
   union x { 
      int i; 
      double d; 
      unsigned short h[4]; 
   };
   
   struct s { 
      union x x1; 
      char c; 
   };
   
   struct s s1;
   s1.x1.d = 39.4;  
   s1.c = 'D';
   printf("%lf %c\n", s1.x1.d, s1.c);
   printf("%d %c\n", s1.x1.i, s1.c);

   s1.x1.i = 42;
   s1.c = 'I';
   printf("%lf %c\n", s1.x1.d, s1.c);
   printf("%d %c\n", s1.x1.i, s1.c);


   return 0;
}