# 19.4: Practice 18 Introduction to Arrays

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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.

Within C++ source code be able to define a single dimension array.

Within C++ source code be able to access array members using the index operator.

Within C++ source code be able to calculate the number of members in an array using the sizeof operator.

## Exercises

Questions
1. The array data type is one of the standard data types in C++.
2. Arrays can have more than one dimension.
3. For loops are often used to display the members of an array.
4. When defining an array, it is preferable to specify how many members are in the array.
5. Arrays are rarely used to represent data.
1. False
2. True
3. True
4. False
5. False


## Lab Assignment

#### Creating a Folder or Sub-Folder for Chapter 18 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_18 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_18_Narrative_Description.txt file. Name it: Lab_18.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 18a - Instructions

Briefly explain what an array is and list the two common operators used with arrays.

This page titled 19.4: Practice 18 Introduction to Arrays is shared under a CC BY license and was authored, remixed, and/or curated by Kenneth Leroy Busbee (OpenStax CNX) .