#define led 12
#define button 8
bool ledstate = 0;
bool buttonstate = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  pinMode(button, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  buttonstate = digitalRead(button);

  if (buttonstate) {
    ledstate = !ledstate;
    while(buttonstate) {
      buttonstate = digitalRead(button);
    }
  }
  digitalWrite(led, ledstate);
  delay(50);
}