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

typedef struct foo {
	unsigned char	foo_0:2,
					foo_1:2,
					foo_2:2,
					foo_3:2;
} foo;


union ucb {
	struct bits {
	unsigned char	:4,
					b0:1,
					b1:1,
					b2:1,
					b3:1;
	} bits;
	unsigned char	c;
};



int main(int argc, char** argv)
{
	union ucb u;
	foo bar;

	bar.foo_0=0;
	bar.foo_1=1;
	bar.foo_2=2;
	bar.foo_3=3;
	printf("%d %d %d %d\n", bar.foo_0, bar.foo_1, bar.foo_2, bar.foo_3);

	bar.foo_0=1;
	bar.foo_1=1;
	bar.foo_2=1;
/*	bar.foo_3=3;*/
	printf("%d %d %d %d\n", bar.foo_0, bar.foo_1, bar.foo_2, bar.foo_3);

	bar.foo_0=0;
	bar.foo_1=3;
	bar.foo_2=2;
	bar.foo_3=1;
	printf("%d %d %d %d\n", bar.foo_0, bar.foo_1, bar.foo_2, bar.foo_3);

	bar.foo_0=3;
	bar.foo_1=1;
/*	bar.foo_2=2;*/
	bar.foo_3=2;
	printf("%d %d %d %d\n", bar.foo_0, bar.foo_1, bar.foo_2, bar.foo_3);
	printf("%d\n", sizeof(bar));

	u.c=0;
	u.bits.b0=1;
	u.bits.b2=1;
	printf("c: %d\n", u.c);

	u.c=(unsigned char)atoi(argv[1]);
	printf("c.b0: %d\n", u.bits.b0);
	printf("c.b1: %d\n", u.bits.b1);
	printf("c.b2: %d\n", u.bits.b2);
	printf("c.b3: %d\n", u.bits.b3);
}