int led = 10;
int button = 7;
int buttonState;
int lastButtonState = LOW;
int ledState = LOW;


void setup() {
  pinMode(button, INPUT);
  pinMode(led, OUTPUT);
}

void loop() {
  buttonState = digitalRead(button);
    if (buttonState == HIGH && lastButtonState == LOW) {
    ledState = !ledState;
    digitalWrite(led, ledState);
  }
  lastButtonState = buttonState;
  delay(50);
}