We extend the language of conditionals from the previous example by adding the keyword "else". This allows conditionals to ask two or more sequential questions, each with a different action.

Highlighted Features

• if
• else

/**
 * Conditionals 2. 
 * 
 * We extend the language of conditionals from the previous
 * example by adding the keyword "else". This allows conditionals 
 * to ask two or more sequential questions, each with a different
 * action. 
 */

size(640, 360);
background(0);

for (int i = 2; i < width-2; i += 2) {
  // If 'i' divides by 20 with no remainder
  if ((i % 20) == 0) {
    stroke(255);
    line(i, 80, i, height/2);
    // If 'i' divides by 10 with no remainder
  } else if ((i % 10) == 0) {
    stroke(153);
    line(i, 20, i, 180); 
    // If neither of the above two conditions are met
    // then draw this line
  } else {  
    stroke(102);
    line(i, height/2, i, height-20);
  }
}