Operator precedence

This example is for Wiring version 0027+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

Modulo.

The modulo operator (%) returns the remainder of a number divided by another. As in this example, it is often used to keep numerical values within a set range.


int num = 0;

void setup()
{
  Serial.begin(9600);
}

void loop() 
{ 
  num = (num + 1) % 10;  // num goes from 0 to 9
  Serial.print(num, DEC);
  Serial.print(" ");
}