Chapter 9, Problem 13PE

Program Plan Intro

Random walk

Program Plan:

• Import the header file.
• Define the main method.
  • Call the “printIntro ()” method.
  • Get the input from the user.
  • Call the “avgTravel ()” method and store it in a variable.
  • Display the result by calling “printSummary ()” method.
• Define the “printIntro ()” method.
  • Display the messages.
• Define the “avgTravel ()” method.
  • Set the values
  • Iterate “i” till it reaches 1000
    • Call the “simNSteps ()” method
    • Calculate the “totBlocks”
      • Check “totBlocks” is equal to 0
        • Set the value
      • Otherwise, calculate the “avgDist”
      • Return the result.
• Define “simNBlocks ()” method
  • Set the values
  • Iterate “i” till it reaches “n”
    • Calculate “x” value
      • Check “x” is greater than or equal to 0 and less than 1
        • Increment the “blockX” value
      • Check “x” is greater than or equal to 1 and less than 2
        • Decrement the “blockX” value.
      • Check “x” is greater than or equal to 2 and less than 3
        • Increment the “blockY” value
      • Otherwise, decrement the “blockY” value.
      • Return the result.
• Define “printSummary ()” method
  • Display the result.
• Call the main method.