Chapter 7, Problem 15PE

Program Plan Intro

Draw a line

Program plan:

• Import the necessary modules.
• Define the “main()” function,
  • Draw the square window using “GraphWin()” method.
  • Set the coordinates for the window.
  • Get two mouse clicks from the user.
  • Draw the window.
  • Get mouse clicks for two points.
  • Assign coordinates in variables “x1”, “x2”, “y1”, and “y2”.
  • Create a line with midpoint “cyan”.
  • Calculate the length of the line.
  • Check whether the difference between two points is zero,
    • If it is true, assign the text.
    • Otherwise, calculate the slope of the line.
    • Assign the text with slope of the line.
  • Print length and slope of the line.
• Call the function “main()”.