Gain insights into the C++ keyword 'const,' its usage in various contexts, and implications when returning pointers and references. Learn about preventing accidental data changes.

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In this course, you will learn about the C++ keyword const and its behaviour under different usage conditions, including local, global and static contexts. This course will help you to understand const and its implications when you attempt to return pointers and references in C++. By the end of the course, you will have a solid grip on const and its usage in preventing any accidental change of data.

Secure Coding Practices in C++: A Deep Dive into const

What does it mean if a variable is declared as `const`? 


What does it mean if a variable is declared as <code>const</code>?

It increases the efficiency of the compiler.

It improves the chances for optimizations as the value will not change anymore.

How does the constness of a local variable help the compiler?

How does the constness of a local variable help the compiler?

Whenever we don't plan to change its value.


In what situation should we declare a local variable as `const`?


In what situation should we declare a local variable as <code>const</code>?

Here's a short quiz to test your understanding.

Introduction

Arguments using const

Local Variables

Local Members

Functions

Return Types

const Parameters

const and Smart Pointers

Rvalue References

Summary

Quiz