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C++ Fundamentals · Arrays & Pointers · Lesson 16 of 24

Arrays

Concept

Arrays

An array holds a fixed-size sequence of elements of the same type, accessed by a zero-based index.

By the end of this lesson
  • Explain the core idea behind Arrays.
  • Predict output before running a change.
  • Test one realistic and one unusual input.
  • Use the result to make the next decision.
How to study this page
  1. 1. Read one concept.
  2. 2. Change the example.
  3. 3. Run, compare, and explain.
  4. 4. Complete the challenge below.
ExampleRunnable
int scores[3] = {90, 85, 78};
std::cout << scores[0] << std::endl;
Try it Yourself »
Self-check before continuing

Without looking at the example, describe what changes when you modify one input in Arrays. Then reopen the editor and prove your explanation with a small test.

You are ready to continue when you can predict, test, and explain the result.

Your turn

Create an array of 5 integers and print the last one.

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Console

Output will appear here...