namespace;
include rt;

// do/while, enum constants, and a C cast
typecheck on;
enum color { RED, GREEN = 5, BLUE };
fn main() {
	int n = 0, i = 0;
	do {
		i++;
		if (i == 2) continue;
		n = n + i;
	} while (i < 5);
	int* p = (int*)0;
	int z = (int)p;
	rt.put_n(n); rt.put_c(' ');
	rt.put_n(RED); rt.put_c(' '); rt.put_n(GREEN); rt.put_c(' ');
	rt.put_n(BLUE); rt.put_c(' ');
	rt.put_n(z); rt.put_c(10);
	return 0;
}