# 22.2: Practice 21 More on Typedef

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## Learning Objectives

With 100% accuracy during a: memory building activity, exercises, lab assignment, problems, or timed quiz/exam; the student is expected to:

Define the terms on the definitions as listed in the modules associated with this chapter.

Understand how typedef is used within C++ source code be able make the code versatile that is easy to change for different data types.

## Exercises

Questions
1. Most programmers rarely worry about efficiency.
2. Modular/structured programming helps improve efficiency.
3. Flexible coding helps improve efficiency.
4. Who cares about indentation and alignment within source code. It's a waste of time.
5. Versatile code is a concept that is easy to understand.
1. False - Efficiency of code execution, no; efficiency of code production and maintenance, yes.
2. True
3. True
4. False
5. Maybe true and maybe false - It does require some effort to catch on to how it works.


## Lab Assignment

#### Creating a Folder or Sub-Folder for Chapter 21 Files

Depending on your compiler/IDE, you should decide where to download and store source code files for processing. Prudence dictates that you create these folders as needed prior to downloading source code files. A suggested sub-folder for the Bloodshed Dev-C++ 5 compiler/IDE might be named:

• Chapter_21 within the folder named: Cpp_Source_Code_Files

If you have not done so, please create the folder(s) and/or sub-folder(s) as appropriate.

Download and store the following file(s) to your storage device in the appropriate folder(s). You may need to right click on the link and select "Save Target As" in order to download the file.

#### Detailed Lab Instructions

Read and follow the directions below carefully, and perform the steps in the order listed.

• Create a source code file following the directions in the Lab_21_Narrative_Description.txt file. Name it: Lab_21.cpp
• Build (compile and run) your program.
• After you have successfully written this program, if you are taking this course for college credit, follow the instructions from your professor/instructor for submitting it for grading.

## Problems

#### Problem 21a - Instructions

Explain the difference between flexible coding and versatile coding.

This page titled 22.2: Practice 21 More on Typedef is shared under a CC BY license and was authored, remixed, and/or curated by Kenneth Leroy Busbee (OpenStax CNX) .