//Exercise #3
//Program the LED’s to alternate blinks

void setup() {
    // Configure the pins to be outputs
    pinMode(led1, OUTPUT);
    pinMode(led2, OUTPUT);   
}

void loop() {
    
    for (int i = 0; i < 5; i++) {
        digitalWrite(led1, HIGH);
        delay(500);
    
        digitalWrite(led1, LOW);
        delay(500);
        
        digitalWrite(led2, HIGH);
        delay(500);
    
        digitalWrite(led2, LOW);
        delay(500);
    }
    
    delay(3000);
    
}