Book Image

The C++ Workshop

By : Dale Green, Kurt Guntheroth, Shaun Ross Mitchell
Book Image

The C++ Workshop

By: Dale Green, Kurt Guntheroth, Shaun Ross Mitchell

Overview of this book

C++ is the backbone of many games, GUI-based applications, and operating systems. Learning C++ effectively is more than a matter of simply reading through theory, as the real challenge is understanding the fundamentals in depth and being able to use them in the real world. If you're looking to learn C++ programming efficiently, this Workshop is a comprehensive guide that covers all the core features of C++ and how to apply them. It will help you take the next big step toward writing efficient, reliable C++ programs. The C++ Workshop begins by explaining the basic structure of a C++ application, showing you how to write and run your first program to understand data types, operators, variables and the flow of control structures. You'll also see how to make smarter decisions when it comes to using storage space by declaring dynamic variables during program runtime. Moving ahead, you'll use object-oriented programming (OOP) techniques such as inheritance, polymorphism, and class hierarchies to make your code structure organized and efficient. Finally, you'll use the C++ standard library?s built-in functions and templates to speed up different programming tasks. By the end of this C++ book, you will have the knowledge and skills to confidently tackle your own ambitious projects and advance your career as a C++ developer.

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Table of Contents (15 chapters)
Preface
Preface
About the Book
1
1. Your First C++ Application
1. Your First C++ Application
Introduction
Anatomy of a C++ Application
C++ Keywords
Preprocessor Directives
Basic I/O Statements
Functions
Summary
Free Chapter
2
2. Control Flow
2. Control Flow
Introduction
if/else
switch/case
Loops
break/continue
Summary
3
3. Built-In Data Types
3. Built-In Data Types
Introduction
Data Types
Containers
Classes/Structs
Storage Lifetime
Summary
4
4. Operators
4. Operators
Introduction
Arithmetic Operators
Relational Operators
Unary Operators
Assignment Operators
Logical Operators
Operator Overloading
Bitwise Operators
Summary
5
5. Pointers and References
5. Pointers and References
Introduction
Memory Addresses
References
Summary
6
6. Dynamic Variables
6. Dynamic Variables
Introduction
Dynamic Variables
Seven Dynamic Variable Sins
Dynamic Containers
Summary
7
7. Ownership and Lifetime of Dynamic Variables
7. Ownership and Lifetime of Dynamic Variables
Introduction
Smart Pointers — Automated Ownership of Dynamic Variables
Shared Ownership of Dynamic Variables
Summary
8
8. Classes and Structs
8. Classes and Structs
Introduction
Classes versus Structs
Unions
Constructors and Destructors
Summary
9
9. Object-Oriented Principles
9. Object-Oriented Principles
Introduction
Classes and OOP
Return Value or Reference
Summary
10
10. Advanced Object-Oriented Principles
10. Advanced Object-Oriented Principles
Introduction
Inheritance
Multiple Inheritance
Polymorphism
Casting between Types
Summary
11
11. Templates
11. Templates
Introduction
Syntax
Creating a Generic Queue
Summary
12
12. Containers and Iterators
12. Containers and Iterators
Introduction
Containers
Vectors-Handy, Resizable Arrays
Map/Unordered Map: Our Associative Containers
Sets/Multisets
Queues/Stacks
Summary
13
13. Exception Handling in C++
13. Exception Handling in C++
Introduction
Responding to Unexpected Events
Summary
Appendix
Appendix
1. Your First C++ Application
2. Control Flow
3. Built-in Data Types
4. Operators
5. Pointers and References
6. Dynamic Variables
7. Ownership and Lifetime Of Dynamic Variables
8. Classes and Structs
9. Object-Oriented Principles
10. Advanced Object-Oriented Principles
11. Templates
12. Containers and Iterators
13. Exception Handling in C++

7. Ownership and Lifetime Of Dynamic Variables

Activity 7: Storing the Words of a Book Using Dynamic Variables

Solution:

  1. Start with the skeleton main() program. It might look like this:
    #include <iostream>
#include <memory>
using namespace std;
int main()
{
    return 0;
}
  2. Define the word class:
    class word
{
    friend class line;
    unique_ptr<char[]> ptr_;
    int letters_;
    int spaces_;
    word* next_;
public:
    word(char const* srcp, int l, int spaces);
    void to_string(char* dstp);
    int size();
};// end word

    There is a unique_ptr<> to char array that holds the letters of the word, and a count of letters and spaces. Finally, since the words in a line are going to be a linked list, there is a next pointer.

    The constructor copies in the word string and the...

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