const int led1 = 13;
const int led2 = 12;
const int pushButton = 11;
bool val = false;
void setup() {
 pinMode (led1, OUTPUT);
 pinMode (led2, OUTPUT);
 pinMode (pushButton, INPUT);
}
void loop() {
 val = digitalRead(pushButton);
 if(val == true){
 digitalWrite(led1, LOW);
 digitalWrite(led2, HIGH);
 }
 else{
 digitalWrite(led1, HIGH);
 digitalWrite(led2, LOW);
 }
 delay(100);
}