int temp=40;

void setup() {
  // put your setup code here, to run once:
pinMode(10, OUTPUT);
Serial.begin(9600);

 do {
    digitalWrite(10, HIGH); delay(250);
    digitalWrite(10, LOW); delay(250);
  temp -= 1;
  Serial.println(temp);
  } while (temp>30);

}

void loop() {
  // put your main code here, to run repeatedly:
}


//do while loop is atleast runs even if the conditions are FALSE.