void setup() {    
  pinMode(2, OUTPUT); //LED
  pinMode(3, INPUT_PULLUP); //PUSH BUTTON
}
void loop() { 
  int b=digitalRead(3);
  if(b==0){
  digitalWrite(2,HIGH);   
  delay(1000);   
  digitalWrite(2,LOW); 
  delay(1000); 
  digitalWrite(2,HIGH);   
  delay(1000);   
  digitalWrite(2,LOW); 
  delay(1000); 
  digitalWrite(2,HIGH);   
  delay(1000);   
  digitalWrite(2,LOW); 
  delay(1000); 
  }
}