int red = 12 ;
int Green = 15;
int button1= 14;
int button2 = 11 ; 

int buttonstate1 = 0 ; 
int buttonstate2 = 0 ;

void setup () {
  pinMode(red,OUTPUT);
  pinMode(Green,OUTPUT);
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);


}

void loop() {
  buttonstate1 = digitalRead(button1); 
  buttonstate2 = digitalRead(button2);
  if (buttonstate1==1 && buttonstate2==0 )
  {
    digitalWrite(red , HIGH);
    digitalWrite(Green , LOW);


  }
  else if (buttonstate1==0 && buttonstate2==1)
  {
    digitalWrite(red, LOW);
    digitalWrite(Green ,HIGH);
  }
  
}