Implementing as many variables as needed to replace all static numbers in the ellipse and rect functions of this program.

Note that some variables can be reused multiple times.

Also use meaningful variable names

// A simple drawing of circles and squares

void setup() { size(600, 400); }// end of setup

void draw() { background(255); stroke(0); fill(175); rectMode(CENTER); rect(300,100,50,50); rect(300,200,50,50); rect(300,300,50,50); ellipse(200, 200, 50, 50); ellipse(300, 200, 50, 50); ellipse(400, 200, 50, 50);

}// end of draw