#include <stdio.h>

int main(void) {
	char * a = "hello";
	char * b = "world";
	char * c = "hello";
	
	if (!strcmp(a,b)) {
		printf("true for a and b\n");
	} else {
		printf("false for a and b\n");
	}
	
	if (!strcmp(a,c)) {
		printf("true for a and c\n");
	} else {
		printf("false for a and c\n");
	}
	
	return 0;
}