Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
C++ Game Development Cookbook

You're reading from   C++ Game Development Cookbook

Arrow left icon
Product type Paperback
Published in May 2016
Publisher Packt
ISBN-13 9781785882722
Length 346 pages
Edition 1st Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Druhin Mukherjee Druhin Mukherjee
Author Profile Icon Druhin Mukherjee
Druhin Mukherjee
Arrow right icon
View More author details
Toc

Table of Contents (15) Chapters Close

Preface 1. Game Development Basics FREE CHAPTER 2. Object-Oriented Approach and Design in Games 3. Data Structures in Game Development 4. Algorithms for Game Development 5. Event-Driven Programming – Making Your First 2D Game 6. Design Patterns for Game Development 7. Organizing and Backing Up 8. AI in Game Development 9. Physics in Game Development 10. Multithreading in Game Development 11. Networking in Game Development 12. Audio in Game Development 13. Tips and Tricks Index

Using the const keyword to optimize your code

We have already seen in previous recipes that a const keyword is used to make data or a pointer constant so that we cannot change the value or address, respectively. There is one more advantage of using the const keyword. This is particularly useful in the object-oriented paradigm.

Getting ready

For this recipe, you will need a Windows machine and an installed version of Visual Studio.

How to do it…

In this recipe, we will find out how easy it is to use the const keyword effectively:

#include <iostream>

class A
{
public:

  void Calc()const
  {
    Add(a, b);
    //a = 9;       // Not Allowed
  }
  A()
  {
    a = 10;
    b = 10;

  }
private:
  
  int a, b;
  void Add(int a, int b)const
  {
    
    std::cout << a + b << std::endl;
  }
};

int main()
{
  
  A _a;
  _a.Calc();

  int a;
  std::cin >> a;

  return 0;
}

How it works…

In this example, we are writing a simple application to add two numbers. The first...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime