int led = 4;
int choise;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(led, OUTPUT);



}

void loop() {
  // put your main code here, to run repeatedly:
Serial.println("1 Or 0 ?");
  while (Serial.available)

  int choise = Serial.parseInt();
  Serial.print("the choise is: ");
 Serial.println(choise);

switch (choise){
case 1 : 
  digitalWrite(led, HIGH);

  break;
  case 0: 
  digitalWrite(led, LOW);
  break;
}




}