// Define pins for seven segment display
const int digit1Pin = 2;
const int digit2Pin = 3;
const int segA = 4;
const int segB = 5;
const int segC = 6;
const int segD = 7;
const int segE = 8;
const int segF = 9;
const int segG = 10;

// Define timings for traffic light states
const int greenDuration = 5000; // 5 seconds
const int yellowDuration = 2000; // 2 seconds
const int redDuration = 5000; // 5 seconds

// Function to display a digit on seven segment display
void displayDigit(int digit) {
  switch (digit) {
    case 0:
      digitalWrite(segA, LOW);
      digitalWrite(segB, LOW);
      digitalWrite(segC, LOW);
      digitalWrite(segD, LOW);
      digitalWrite(segE, LOW);
      digitalWrite(segF, LOW);
      digitalWrite(segG, HIGH);
      break;
    // Define cases for digits 1-9
  }
}

void setup() {
  // Set pins as outputs
  pinMode(digit2Pin, OUTPUT);
  pinMode(digit2Pin, OUTPUT);
  pinMode(segA, OUTPUT);
  pinMode(segB, OUTPUT);
  pinMode(segC, OUTPUT);
  pinMode(segD, OUTPUT);
  pinMode(segE, OUTPUT);
  pinMode(segF, OUTPUT);
  pinMode(segG, OUTPUT);
}

void loop() {
  // Green light
  digitalWrite(digit1Pin, HIGH);
  digitalWrite(digit2Pin, LOW);
  displayDigit(0); // Display '0' for green light
  delay(greenDuration);

  // Yellow light
  digitalWrite(digit1Pin, LOW);
  digitalWrite(digit2Pin, HIGH);
  displayDigit(1); // Display '1' for yellow light
  delay(yellowDuration);

  // Red light
  digitalWrite(digit1Pin, HIGH);
  digitalWrite(digit2Pin, HIGH);
  displayDigit(2); // Display '2' for red light
  delay(redDuration);
}