#include <stdio.h>

typedef struct
{
	union {
		struct {
			int x;
			int y;
		};
		struct {
			int a;
			int b;
		};
	};
} struct_in_union;

int main(int argc,char **argv)
{
	struct_in_union v = {.a = 5};
	int *m = (int *) &v;
	printf("%08x %08x\n",m[0],m[1]);
	return 0;
}