modify lab2-3-2

+// Wiring Pi Library  
+#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 KeypadRead()
+{
+	int i, keypadnum = -1;
+	for (i = 0; i < 2; i++) {
+		if (!digitalRead(Keypad[i])) {
+			keypadnum = i; break;
+		}
+	}
+	return keypadnum;
+}
+void LedControl(int num)
+{
+	int i;
+	for (i = 0; i < 8; i++) {
+		if (i == num)
+			digitalWrite(LedRed[i], HIGH);
+		else
+			digitalWrite(LedRed[i], LOW);
+	}
+}
+void stop() {
+	LedControl(-1);
+}
+int main(void)
+{
+	int i, keypadnum = -1;
+	if (wiringPiSetupGpio() == -1)
+		return 1;
+	for (i = 0; i < 8; i++) {
+		pinMode(LedRed[i], OUTPUT);
+		digitalWrite(LedRed[i], LOW);
+	}
+	for (i = 0; i < 2; i++)
+		pinMode(Keypad[i], INPUT);
+	if (wiringPiISR(Keypad[2], INT_EDGE_FALLING, &stop) < 0) {
+		return 1;
+	}
+
+	while (1) {
+		keypadnum = KeypadRead();
+		if (keypadnum == 0) {
+			while (1) {
+				for (i = 0; i < 8; i++) {
+					LedControl(i);
+					delay(500);
+				}
+				digitalWrite(LedRed[i - 1], LOW);
+			}
+		}
+		else if (keypadnum == 1) {
+			while (1) {
+				for (i = 7; i >= 0; i--) {
+					LedControl(i);
+					delay(500);
+				}
+				digitalWrite(LedRed[i + 1], LOW);
+			}
+		}
+		if (keypadnum == 3) {
+			for (i = 0; i < 8; i++) {
+				LedControl(i);
+				delay(500);
+			}
+			digitalWrite(LedRed[i - 1], LOW);
+		}
+		else if (keypadnum == 4) {
+			for (i = 7; i >= 0; i--) {
+				LedControl(i);
+				delay(500);
+			}
+			digitalWrite(LedRed[i + 1], LOW);
+		}
+	}
+	return 0;
+}
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+// Wiring Pi Library 헤더파일 선언
+#include <wiringPi.h>
+// LED ON/OFF 정의
+#define LED_ON 1
+#define LED_OFF 0
+// 라즈베리파이 및 LED 핀 정의
+const int Led[16] = {
+	4, 17, 18, 27, 22, 23, 24, 25,
+	6, 12, 13, 16, 19, 20, 26, 21
+};
+int main(void){
+	int i; // for문 변수
+	if(wiringPiSetupGpio() == -1) // GPIO 초기화
+		return 1;
+	for(i=0; i<16; i++){
+		pinMode(Led[i], OUTPUT); // LED 핀 출력모드 설정
+		digitalWrite(Led[i], LED_OFF); // LED 전체 OFF
+	}
+	while(1){
+		digitalWrite(Led[0], LED_ON); // LED 1 ON
+		delay(500); // 500ms 지연
+		digitalWrite(Led[0], LED_OFF); // LED 1 OFF
+		delay(500); // 500ms 지연
+	}
+	return 0;
+}
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+#include <wiringPi.h>// Wiring Pi Library 헤더파일 선언
+#define LED_OFF 0 // LED OFF 정의
+#define LED_ON 1 // LED ON 정의
+#define LED_RED 2 // LED RED 정의
+#define LED_GREEN 3 // LED GREEN 정의
+// 라즈베리파이 및 LED RED / GREEN 핀 정의
+const int LedRed [8] = { 4, 17, 18, 27, 22, 23, 24, 25 };
+const int LedGreen [8] = { 6, 12, 13, 16, 19, 20, 26, 21 };
+void LEDControl(int color) {
+	int i;
+	if(color == LED_RED) {
+		for(i=0; i<8; i++) {
+			digitalWrite(LedRed[i], LED_ON);
+			digitalWrite(LedGreen[i], LED_OFF);
+		}
+	}
+	else if(color == LED_GREEN) {
+		for(i=0; i<8; i++) {
+			digitalWrite(LedRed[i], LED_OFF);
+			digitalWrite(LedGreen[i], LED_ON);
+		}
+	}
+}
+int main(void){
+	int i;
+	if(wiringPiSetupGpio() == -1)
+		return 1;
+	for(i=0; i<8; i++){
+		pinMode(LedRed[i], OUTPUT);
+		pinMode(LedGreen[i], OUTPUT);
+		digitalWrite(LedRed[i], LED_OFF);
+		digitalWrite(LedGreen[i], LED_OFF);
+	}
+	while(1){
+		LEDControl(LED_RED);
+		delay(500);
+		LEDControl(LED_GREEN);
+		delay(500);
+	}
+	return 0;
+}
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+// Wiring Pi Library  
+#include <wiringPi.h>
+const int LedRed[8] = { 4, 17, 18, 27, 22, 23, 24, 25 };
+const int Keypad[2] = { 16, 19 };
+int KeypadRead()
+{
+	int i, keypadnum = -1;
+	for (i = 0; i < 2; i++) {
+		if (!digitalRead(Keypad[i])) {
+			keypadnum = i; break;
+		}
+	}
+	return keypadnum;
+}
+void LedControl(int num)
+{
+	int i;
+	for (i = 0; i < 8; i++) {
+		if (i == num)
+			digitalWrite(LedRed[i], HIGH);
+		else
+			digitalWrite(LedRed[i], LOW);
+	}
+}
+int main(void)
+{
+	int i, keypadnum = -1;
+	if (wiringPiSetupGpio() == -1)
+		return 1;
+	for (i = 0; i < 8; i++) {
+		pinMode(LedRed[i], OUTPUT);
+		digitalWrite(LedRed[i], LOW);
+	}
+	for (i = 0; i < 2; i++)
+		pinMode(Keypad[i], INPUT);
+	while (1) {
+		keypadnum = KeypadRead();
+		if (keypadnum == 0) {
+			for (i = 0; i < 8; i++) {
+				LedControl(i);
+				delay(500);
+			}
+			digitalWrite(LedRed[i - 1], LOW);
+		}
+		else if (keypadnum == 1) {
+			for (i = 7; i >= 0; i--) {
+				LedControl(i);
+				delay(500);
+			}
+			digitalWrite(LedRed[i + 1], LOW);
+		}
+	}
+	return 0;
+}
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