update

HW7_Mutex/led_main.c

@@ -21,8 +21,7 @@ int main(int argc, char* argv[]) {
 	wiringPiSetup();
 
 	if (argc < 2) {
-		printf("Insert Correct value, try again\n");
-		exit(-1);
+		led_red_task();
 	}
 	gno = atoi(argv[1]);
 	time = atoi(argv[2]);