boolean btn1;
 boolean btn2;
 boolean btn3;

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


  pinMode(10,OUTPUT);
  pinMode(9,OUTPUT);
  pinMode(8,OUTPUT);

  pinMode(7,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(5,OUTPUT);

 btn1=false;
 btn2=false;
 btn3=false;
  Serial.begin(9600);
}

void loop() {

  
  
  if(digitalRead(7)==1)
  {
   btn1=true;
   btn2=false;
   btn3=false;
  }

  if(digitalRead(6)==1)
  {
    btn1=false;
   btn2=true;
   btn3=false;
  }

  if(digitalRead(5)==1)
  {
   btn1=false;
   btn2=false;
   btn3=true;
   
  }

  if(btn1)
  {
    dioda1();
  }

  if(btn2)
  {
    dioda2();
  }
 
 if(btn3)
 {
  dioda3();
 }




}


void dioda1()
{
  digitalWrite(10,HIGH);
  delay(100);
  digitalWrite(10,LOW);
  delay(100);
}




void dioda2()
{
  digitalWrite(9,HIGH);
  delay(100);
  digitalWrite(9,LOW);
  delay(100);
  digitalWrite(8,HIGH);
  delay(100);
  digitalWrite(8,LOW);
  delay(100);
  
}


void dioda3()
{

   digitalWrite(10,HIGH);
  delay(100);
  digitalWrite(10,LOW);
  delay(100);
  digitalWrite(9,HIGH);
  delay(100);
  digitalWrite(9,LOW);
  delay(100);
  digitalWrite(8,HIGH);
  delay(100);
  digitalWrite(8,LOW);
  delay(100);
}