int i=0;
void setup() {
  pinMode(10, OUTPUT);  
  for(i=0;i<5;i++)
  {
  digitalWrite(10, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second
  digitalWrite(10, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second
  }  
}
void loop() {
}
