CS 115 Summer 2017,

Lab 3 :

Due in Thursday 6/22/17 in Lab

Educational goals of this lab - verify that every student can do the following:

• Get inputs from user
• Arithmetic operators
• Output operators
• typecasts for input of numbers
• Using Built-in Packages

INSTRUCTIONS:

• Problem: Calculating change
  You need a program that will calculate the change you are due when you buy an item in a store. You need to know how much the item costs and how much money you gave the cashier. The program reports how many dollars, quarters, dimes, nickels and pennies that you get back.
  In this lab, write a python program to calculate the change (dollars, quarters, dimes, nickels and pennies) that the user get back from the cashier
  
  
  
  
  
  
• Run Examples
  When you have the program running correctly, Verify that your program produces the same output as in the following test cases.

--- Test case 1 ---

Change calculator
Enter the price of the item bought: .99
Enter the amount of money you give the cashier: 1
Your change:
   dollars       0
   quarters      0
   dimes         0
   nickels       0
   pennies       1
Thank you for your business

--- Test case 2 ---

hange calculator
Enter the price of the item bought: 1.57
Enter the amount of money you give the cashier: 3
Your change:
   dollars       1
   quarters      1
   dimes         1
   nickels       1
   pennies       3
Thank you for your business

• Program Prolog
  

  # supply program prolog
  # Prolog
  # Author:  Mary Smith
  # Email:  Mary.Smith@uky.edu
  # Section: 00
  # Date: 8/31/16
  
  '''
    Purpose: ....
    Preconditions: ....
    Postconditions: ....
  '''
  

• Requirments:
  1- Your output should match the run examples above.
  
  2- Make sure you document your program. Use good, multi-character, meaningful identifiers (variables).
  
  3- At the top of your program, you should have a prolog (name, date, etc.) and comments explaining different operations in your code.
  
  4- Save the program file as cashier.py.
  
  
• When you are done, show your program to the Instructor and then submit your file (cashier.py) as a submission for Lab 3 on CANVAS.