#include <stdio.h>

bool bla() {
	printf("bla\n");
	return true;
}

int main() {
	printf("main\n");
	
	while (bla(), false)
		printf("while\n");
	
	bool a = (bla(), false);
	
	printf("%s\n", a ? "true" : "false");
	
	return 0;
}