Arduino button click without delay. Toggle led on button up.

arduino_basic_button_code.cpp

const int  buttonPin = 10;    // the pin that the pushbutton is attached to
const int ledPin = 9;         // the pin that the LED is attached to

int wasClickActive = 0;       // state of button click
int ledStatus = 0;            // currentLedStatus

void setup() {
  
  pinMode(buttonPin, INPUT);  // initialize the button pin as a input:
  pinMode(ledPin, OUTPUT);    // initialize the LED as an output:
  Serial.begin(9600);         // initialize serial communication:

}


void loop() {

  int buttonState;
  buttonState = digitalRead(buttonPin);
 
  if (buttonState == HIGH) {
    if (!wasClickActive) {
      wasClickActive = 1;
    }
  } else {
    if (wasClickActive) {
      ledStatus = !ledStatus;
      wasClickActive = 0;
    }
  }

   digitalWrite(ledPin, ledStatus);

}