int led=2;
int button=7;
int state=0;
void setup() {
  // put your setup code here, to run once:
pinMode(led, OUTPUT);
pinMode(button, INPUT);
}

void loop() {
  state=digitalRead(button);
  // put your main code here, to run repeatedly:
if (state==HIGH){
  digitalWrite(led, HIGH);
}
else{
  digitalWrite(led, LOW);
}
}