Lab4 - Sum Of Prime

//K.Thanapat
void setup(){
  int start_value = 0;
  int last_value = 10;
  sum_prime(start_value , last_value);
}
void sum_prime(int start_value ,int last_value){
  int sum_prime = 0;
  int number = start_value;
  while(number<=last_value){
    if(checkPrime(number)){
      sum_prime = sum_prime + number;
    }
    number++;
  }
  println("Start Value = " +start_value);
  println("End Value = " +last_value);
  println("Sum of Prime = " +sum_prime);
}
boolean checkPrime(int number){
  int divisor = 2;
  while(divisor<=number){
    if(divisor==number){
      return true;
    }
    else if(number%divisor==0){
      return false;
    }
    divisor++;
  }
  return false;
}