int readVal;
const int led = pinNo;
const int button = pinNo;

void setup() {
  // put your setup code here, to run once:

Serial.begin(9600);
pinMode(led, OUTPUT);
pinMode(button, INPUT);

}

void loop() {
  // put your main code here, to run repeatedly:

readVal= digitalRead(button);
Serial.println(readVal);

if (readVal == 1) //rememner double == and && in if statements.
  {
    digitalWrite(led, HIGH);
  }
  digitalWrite(led, LOW);
}