const int bot = 2;  // the number of the pushbutton pin
const int ledPin = 0;    // the number of the LED pin

int estado = 0;  // variable for reading the pushbutton status

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(bot, INPUT);
}

void loop() {
  // read the state of the pushbutton value:
  estado = digitalRead(bot);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
  if (estado == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
}