// Define variables
byte counter1, counter2;

// The setup function runs once when you press reset or power the board
void setup() {
    // Initialize counters
    counter1 = 0;
    counter2 = 0;

    // Initialize Ports B and C pins 0-5 as outputs.
    DDRB = 0b00111111;
    DDRC = 0b00111111;

    // Both ports start from zero
    PORTB = 0;
    PORTC = 0;

    pinMode(2, INPUT_PULLUP); // Make bit 2 of Port D an input
    pinMode(3, INPUT_PULLUP); // Make bit 3 of Port D an input
}

// The loop function runs repeatedly forever
void loop() {
    // Display counter1 on PORTC and counter2 on PORTB
    PORTC = counter1;
    PORTB = counter2;

    // Check button connected to pin 2 (increment counter1)
    if (digitalRead(2) == LOW) {
        counter1++;
        delay(200); // Simple debounce delay
    }

    // Check button connected to pin 3 (increment counter2)
    if (digitalRead(3) == LOW) {
        counter2++;
        delay(200); // Simple debounce delay
    }

    // Optional short delay to slow down loop execution
    delay(50);
}