#include <stdio.h>
#include <stdlib.h>

typedef union {
  int i;
  float f;
  double d;
} Ifd;

main()
{
  Ifd ifd;
  int i;
  float f;

  ifd.i = 1;
  i = 1;

  printf("%d %d\n", i, ifd.i);

  ifd.f = 5.55;
  f = ifd.f;

  printf("%f %f\n", ifd.f, f);

  printf("%d\n", ifd.i);
}