modify

@@ -2,11 +2,13 @@
 #include <wiringPi.h>
 const int LedRed[8] = { 4, 17, 18, 27, 22, 23, 24, 25 };
 const int Keypad[5] = { 6, 12, 13, 16, 19 };
+int state = 0;
 int KeypadRead()
 {
 	int i, keypadnum = -1;
 	for (i = 0; i < 2; i++) {
 		if (!digitalRead(Keypad[i])) {
+			state = 1;
 			keypadnum = i; break;
 		}
 	}
@@ -24,6 +26,7 @@ void LedControl(int num)
 }
 void stop() {
 	LedControl(-1);
+	state = 0;
 }
 int main(void)
 {
@@ -45,23 +48,28 @@ int main(void)
 		if (keypadnum == 0) {
 			while (1) {
 				for (i = 0; i < 8; i++) {
+					if (state == 0) break;
 					LedControl(i);
 					delay(500);
 				}
 				digitalWrite(LedRed[i - 1], LOW);
+				if (state == 0) break;
 			}
 		}
 		else if (keypadnum == 1) {
 			while (1) {
 				for (i = 7; i >= 0; i--) {
+					if (state == 0) break;
 					LedControl(i);
 					delay(500);
 				}
 				digitalWrite(LedRed[i + 1], LOW);
+				if (state == 0) break;
 			}
 		}
 		if (keypadnum == 3) {
 			for (i = 0; i < 8; i++) {
+				if (state == 0) break;
 				LedControl(i);
 				delay(500);
 			}
@@ -69,6 +77,7 @@ int main(void)
 		}
 		else if (keypadnum == 4) {
 			for (i = 7; i >= 0; i--) {
+				if (state == 0) break;
 				LedControl(i);
 				delay(500);
 			}