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    postnuka
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  • While loop inside of a while loop.
    hello there,
    I 'm newbiee in processing. Actually programming, too. 
    I'm trying so hard to understanding about while loop, inside of a while loop.
    I know a while loop does its job until predicted condition is false, but what about second while loop ?
    Here is the code i am working on it.

    ---------------------------------------------------
    ---------------------------------------------------
    float x = 0 ;            
    float y = 0;

    void setup() {
          size (400, 400);
          background(255);
          noStroke();
    }

    void draw() {
          fill(0);
          while (x < width) {                   // if x smaller than width 
                while (x> width) {              // x = 0 when program start, so i assumed that processing skip that while loop.
                      y = y + 17 ;               // if x greater than width, y must be +17. 
                }
          rect(x, y, 15, 15);                   //draw 15*15      rectangle at x,y positions
          x = x + 17;                               
                }
          }

    ---------------------------------------------------
    ---------------------------------------------------
    This is my logical explaining why i write code like that. But,
    the code is drawing only first line of canvas. So ...hmm...
    Could someone explain me what is the logic behind a while loop inside of a while loop ?  
    Thank you.