Question of Sequence Numbers

Projects Programming
12

Be prepared to explain how every step works in case the teacher doesn't believe you wrote this yourself. :slight_smile:

long SumOfEvens = 0;
long ProductOfOdds = 1;

void setup()
{
  Serial.begin(115200);
  delay(200);
  Serial.println("Enter numbers, separated by spaces or commas.");
  Serial.println("Enter a negative number to indicate the end of input.");
}

void loop()
{
  if (Serial.available() == 0)
    return;  // Nothing to do

  int number = Serial.parseInt();

  // Throw away any line ending characters
  while (Serial.peek() == '\n' || Serial.peek() == '\r')
    Serial.read();

  if (number < 0)
  {
    // Negative number: End of input
    Serial.print("Sum of even numbers: ");
    Serial.println(SumOfEvens);
    Serial.print("Product of odd numbers: ");
    Serial.println(ProductOfOdds);

    // Reset
    SumOfEvens = 0;
    ProductOfOdds = 1;
  }
  else if ((number % 2) == 0)
  {
    // Even
    SumOfEvens += number;
  }
  else
  {
    // Odd
    ProductOfOdds *= number;
  }
}
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