// Define segment pins
const int a = 2;
const int b = 3;
const int c = 4;
const int d = 5;
const int e = 6;
const int f = 7;
const int g = 8;
const int dp = 9;  // optional, if using the decimal point

void setup() {
  // Set all segment pins as outputs
  pinMode(a, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(f, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(dp, OUTPUT);  // optional

  // Display a number (e.g., '0') on the seven-segment display
  
}

void loop() {
  displayDigit(0);
  delay(1000);
  displayDigit(1);
  delay(1000);
  displayDigit(2);
  delay(1000);
  displayDigit(3);
  delay(1000);
  displayDigit(4);
  delay(1000);
  displayDigit(5);
  delay(1000);
  displayDigit(6);
  delay(1000);
  displayDigit(7);
  delay(1000);
  displayDigit(8);
  delay(1000);
  displayDigit(9);
  delay(1000);
  
}

// Function to display a digit on the seven-segment display
void displayDigit(int num) {
  // Array to store segment values for digits 0-9
  const bool segments[10][7] = {
    {LOW, LOW, LOW, LOW, LOW, LOW, HIGH},  // 0
    {HIGH, LOW, LOW, HIGH, HIGH, HIGH, HIGH},  // 1
    {LOW, LOW, HIGH, LOW, LOW, HIGH, LOW},     // 2
    {LOW, LOW, LOW, LOW, HIGH, HIGH, LOW},     // 3
    {HIGH, LOW, LOW, HIGH, HIGH, LOW, LOW},    // 4
    {LOW, HIGH, LOW, LOW, HIGH, LOW, LOW},     // 5
    {LOW, HIGH, LOW, LOW, LOW, LOW, LOW},      // 6
    {LOW, LOW, LOW, HIGH, HIGH, HIGH, HIGH},   // 7
    {LOW, LOW, LOW, LOW, LOW, LOW, LOW},       // 8
    {LOW, LOW, LOW, HIGH, HIGH, LOW, LOW}      // 9
  };

  digitalWrite(a, segments[num][0]);
  digitalWrite(b, segments[num][1]);
  digitalWrite(c, segments[num][2]);
  digitalWrite(d, segments[num][3]);
  digitalWrite(e, segments[num][4]);
  digitalWrite(f, segments[num][5]);
  digitalWrite(g, segments[num][6]);
}