Duration

30 minutes

Homework goals

Here you will write a program to help restaurant diners calculate the tip and split the bill evenly among the group members. The main goal is to write a class with a field and some methods. A secondary goal is to practice with input/output, variables, and control flow. Sample output from the completed application is shown below.

Required assets

The provided Homework Resources/Completed folder contains a completed version of the program you can use to check your work. Please make sure you have this folder before you begin.

Steps

Below are the high-level instructions to implement the program.

Tip Calculation

1. Create a new Console Project in Visual Studio. Name the Project and Solution TipCalculation.
2. Create a new class named Tipper. Be sure to put it in its own file in your project.
3. Add a public field of type double inside the Tipper class to store the total amount of the restaurant bill.
4. Implement two public methods inside the Tipper class to calculate the tip:
   • CalculateTip: takes one double parameter which represents the desired tip percentage, computes the tip, and returns the tip amount.
   • CalculateTip: takes no parameters, computes a 15% tip, and returns the tip amount. Note that this is method overloading since the two CalculateTip methods have the same name. This is legal in C# since the parameter lists are different (i.e. one of the methods takes 1 parameter and the other takes 0 parameters).
5. Implement one public method inside the Tipper class to split the bill based on the number of diners. Name the method Divvy. It must take an int parameter which specifies the number of diners, calculate the amount each should pay if the bill is split evenly, and return that amount.
6. Open Program.cs. You will be adding code to Main to allow the user to calculate tips and divvy restaurant bills.
7. Create an instance of the Tipper class.
8. Add a loop so the remaining steps can be done repeatedly until the user quits the program. There are two common ways to write a "forever" loop (see below), please use whichever you prefer. Use a break inside the loop to exit the loop when the user asks to quit the program.

   for (;;)
   {
   }
   
   while (true)
   {
   }
   

   The remaining steps will go inside the loop.
9. Read the amount of a restaurant bill from the user and load it into the field of the Tipper object.
10. Ask the user which operation they would like to perform (bad tip, OK tip, good tip, or divvy bill). Read the user response and obtain a single character to represent the operation. This code is fairly tricky so it is given below; you can use this code exactly as-is in your program.

    Console.Write("B)ad tip O)k tip G)ood Tip D)ivvy the bill Q)uit: ");
    char operation = Console.ReadLine().ToUpper()[0];
    

11. Perform the calculation the user requested based on the operation they entered. Here are a few notes to help you:
    • If the user enters 'B', 'O', or 'G', calculate and output a tip of 10%, 15%, or 20% respectively.
    • If the user enters 'D', you will need to read the number of diners from the user and then calculate and output the per-diner amount.
    • If the user enters 'Q', you should exit the loop (which will then exit the program).
12. Build and run the program to test your work.

Summary