Chapter 13, Problem 1SA

Program Plan Intro

Screen coordinate system:

• The computer images are made up of small dots that are termed as pixels.
• The screen coordinate system specifies graphics location.
•  It identifies each pixel’s position in application window.
• The horizontal position of pixel is identified by X coordinate.
• The vertical position of pixel is identified by Y coordinate.
• The coordinates are written in form (X, Y).
• The coordinates for pixel in screen’s upper-left corner is (0, 0).