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union a {
int a;
double b;
} z;
union a b;
/*printf ("union a=%d\n", sizeof(b));*/
b.a = 1;
printf ("union a a=%d\n", b.a);
/*cprintf (1, "union a b=%g\n", b.b);*/
b.b = 2.4;
/*cprintf (1, "union a a=%d\n", b.a);*/
printf ("union a b=%g\n", b.b);
struct d {
int a;
double b;
} c;
union b {
int a;
struct d b;
} d;
/*printf ("union b=%d\n", sizeof (d));
printf ("struct d=%d\n", sizeof (c));*/
d.a = 1;
printf ("union b a=%d\n", d.a);
/*cprintf (1, "union b struct d a=%d\n", d.b.a);
cprintf (1, "union b struct d b=%g\n", d.b.b);*/
d.b.a = 2;
d.b.b = 3.4;
/*cprintf (1, "union b a=%d\n", d.a);*/
printf ("union b struct d a=%d\n", d.b.a);
printf ("union b struct d b=%g\n", d.b.b);
exit;
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