#include <stdio.h>

char a;
short b;
long c;
float d;
double e;

union {
  char a[4];
  short b[2];
  long c;
} x;

main() {
// Widening
a=5;
b=a;
c=b;
d=c;
e=d;
printf("1: %d %d %d %f %f\n",a,b,c,d,e);

// Narrowing
e=1000000000;
d=e;
c=d;
b=c;
a=b;
printf("2: %d %d %d %f %f\n",a,b,c,d,e);

// This could break due to endian issues
x.a[0]=5;
x.a[1]=0;
x.a[2]=0;
x.a[3]=0;
printf("3: %d %d %d\n",x.a[0],x.b[0],x.c);

x.c=1000000000;
printf("4: %d %d %d\n",x.a[0],x.b[0],x.c);
}