int btn1=32;
int btn2=33;
int btn3=35;
int led=25;

int btn1_status=0;  
int btn2_status=0;  
int btn3_status=0;  


void setup(){
  pinMode(btn1, INPUT);
  pinMode(btn2, INPUT);
  pinMode(btn3, INPUT);
  pinMode(led, OUTPUT);
}

void loop(){

btn1_status = digitalRead(btn1);
  if(btn1_status = HIGH);
  {
    led,HIGH;
  }
 btn2_status = digitalRead(btn2);  

  if(btn2_status = HIGH); 
  {
    led,LOW;
  }

 btn3_status = digitalRead(btn3);  
  if(btn3_status = HIGH); 
   {
    digitalWrite(led,HIGH);
   }
  else
    {
    digitalWrite(led,LOW); 
    }

}