Double- and tripple clicking with buttom

Projects Programming
11

You forgot some code from your previous sketch:

const int buttonPin = 7;    // the number of the pushbutton pin
const int ledPin = 13;      // the number of the LED pin

// the following variables are unsigned longs because the time, measured in
// milliseconds, will quickly become a bigger number than can be stored in an int.
unsigned long lastDebounceTime = 0;  // the last time the output pin was toggled
unsigned long debounceDelay = 50;    // the debounce time; increase if the output flickers

With this addition it compiles.