While Loops

• • Watch Fun Programming [ video 23]

  • Here’s a program I wrote:

size(500,500);

background(0);

colorMode(HSB);

fill(0,255,255);

rect(0,250,40,40);

fill(25,255,255);

rect(50,250,40,40);

fill(50,255,255);

rect(100,250,40,40);

fill(75,255,255);

rect(150,250,40,40);

fill(100,255,255);

rect(200,250,40,40);

fill(125,255,255);

rect(250,250,40,40);

fill(150,255,255);

rect(300,250,40,40);

fill(175,255,255);

rect(350,250,40,40);

fill(200,255,255);

rect(400,250,40,40);

fill(225,255,255);

rect(450,250,40,40);

• • Change the program to use a while loop (Hint - put the “fill” and the “rect” inside the while loop and use a variable e.g... “fill(i*25, 255,255)”

  • Now change the program to draw 100 rectangles in the rainbow:

• • Show a mentor, mark the board and get a prize.