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Practice 23: More Arrays & Compiler Directives

Module by: Kenneth Leroy Busbee. E-mail the author

Summary: Questions, exercises, problems, etc. that support this chapter in the "Programming Fundamentals - A Modular Structured Approach using C++" collection/textbook.

Learning Objectives

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

  1. Define the terms on the definitions as listed in the modules associated with this chapter.
  2. Have an exposure to multidimensional arrays.
  3. Understand conditional compilation as a testing technique.
  4. When supplied with test data, add conditional compilation lines to an existing C++ source code.

Memory Building Activities

Link to: MBA 23

Exercises

Exercise 1

Answer the following statements as either true or false:

  1. Very few arrays need more than one axis.
  2. Multidimensional arrays use multiple square brackets, one set per axis.
  3. Using a flag to activate debugging lines of code has been around since the 1950s.
  4. Within C++ we can use the conditional compilation compiler directives to implement debugging line of code.

Solution

Answers:
  1. false
  2. true
  3. true
  4. true

Miscellaneous Items

None at this time.

Lab Assignment

Creating a Folder or Sub-Folder for Chapter 23 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_23 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 the Lab File(s)

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.

Download from Connexions: Lab_23a.cpp

Detailed Lab Instructions

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

  • Compile and run the Lab_23a.cpp source code file. Understand how it works.
  • Copy the source code file Lab_23a.cpp naming it: Lab_23b.cpp
  • Add conditional compilation statements similar to the demonstration program used in the Conditional Compilation Connexions module. Specifically use: 157 pennies, 92 nickels, 23 dimes and 31 quarters as your test data.
  • 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 23a – Instructions

Give three examples in the real world where data might be structured into a multidimensional array. One example (and you can’t count it) is a theatre ticket which might have a section, row and seat number on it.

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