Chapter 9, Problem 14PE

Program Plan Intro

Program to displays a line to trace the walk

Program plan:

• Import the required packages
• In the “main()” function,
  • Generate a prompt to take the user input.
  • Create the object of “GraphWin()”.
  • Set the coordinates by calling the function “setCoords()”
  • A loop is initialized for “i” to be less than 5.
    • Call the function named “randWalk()”.
• The function named “randWalk()” is defined and inside it,
  • Create the object of “Point()”.
  • Initialize a loop to get the x and y coordinates.
    • Store the x-coordinate value derived in x variable.
    • Store the y-coordinate value derived in y variable.
    • Call the function named “simOneStep()”.
    • Draw the line with the use of function “draw()”.
    • Create the object of “Line()”.
    • Draw the line with the use of function “draw()”.
    • Assign the value of “point1” to “point2”.
• The function named “simOneStep()” is defined and inside it,
  • Calculate the angle between two axis and store in variable “angle”.
  • Calculate the position of x axis.
  • Calculate the position of y axis.
  • Create the object of “Point()”.
  • Return the value stored in variable “point”.
• This code executes the main directly.