What does if(i % 2 == 0) { mean?

exilen

if(i % 2 == 0) {

What does this mean? i dont understand what the "%" should say!

can any explain?

calsign

The modulo (%) operator calculates the remainder of a division operation. In this case, it calculates the remainder of i divided by 2. If i is an even number, the result will be 0 and if it is an odd number, the result will be 1. So this if statement checks to see if i is an even number.

GoToLoop

Another l33ter way to check for odds & evens is: $-)

if ((i & 1) == 0) {}

PhiLho

In programming, experimenting is a good way to understand:

void setup()
{
  println("By 2:");
  for (int i = 0; i < 11; i++)
  {
    println(i + " - " + (i % 2));
  }
  println("By 3:");
  for (int i = 0; i < 11; i++)
  {
    println(i + " - " + (i % 3));
  }
  println("By 5:");
  for (int i = 0; i < 11; i++)
  {
    println(i + " - " + (i % 5));
  }
  exit();
}

Chrisir

look also a the reference on http://www.processing.org