#include <stdio.h>

int main(int argc, char *argv[]) {
	int a, b;
	a = 10; b = 11;
	printf("hello %d\n", a + b);
	printf("hello %d, %d\n", a = 10, b = 11);
	printf("hello %d\n", a = 10, b = 11);
	return 0;
}