Hello C++: Switch/Case

At the end of this lesson you will know what a switch expression is and how to use them in a program. You will be able to write a program that will use switch expressions to determine the sequence of actions.

1. Print and read the lesson. (Punch, staple, put in your binder.)
Switch, if, else

2. Run each of the programs from the lesson:

Tip based on service
Season1: with switch
Season2: with if
Season3: with if and || (or) Flowchart
Season4: with nested if/else
Season5: both && and ||
Pay1

To get the most out of these programs

Run the flowchart (if provided) to help understand the logic.
Copy the program, paste it into your C++ compiler and run it..
Experiment with it: make little changes and see what happens, make sure you understand it.
Erase it - now try to write it without looking at your notes!

3. Using the sample programs as a model, write a program that will ask the cost of a meal and then ask the user to rank the service. Print out how much tip to leave. 10% for poor service, 15% for average service, 20% for good service.

Follow good programming habits:

Indent each statement inside the curly braces about 2 spaces. All of the statements should line up.
Use good variable names and comments: if you look at the program in a year, will you know what the program does?

Summary: The switch statement provides an alternative to using a nested if/else block. It is a good choice when a variable has a limited number of possible values.

The general format for a switch block is:

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Hello Computer Science: C++ Switch

Hello C++: Switch/Case

At the end of this lesson you will know what a switch expression is and how to use them in a program. You will be able to write a program that will use switch expressions to determine the sequence of actions.

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