Object-Oriented Programming in C++ | Microsoft Visual C++ Windows Applications by Example

Namespaces

Code can be placed in functions and functions can be placed in classes as methods. The next step is to create a namespace that contains classes, functions, and global variables.

namespace TestSpace
{
  double Square(double dValue);

  class BankAccount
  {
    public:
      BankAccount();
      double GetSaldo() const;

      void Deposit(double dAmount);
      void Withdraw(double dAmount);

    private:
      double m_dSaldo;
  };
};

double TestSpace::Square(double dValue)
{
  return dValue * dValue;    
}

TestSpace::BankAccount::BankAccount()
 :m_dSaldo(0)
{
  // Empty.
}
// ...

void main()
{
  int dSquare = TestSpace::Square(3.14);
  TestSpace::BankAccount account;
  account.Deposit(1000);
  account.Withdraw(500);
  double dSaldo = account.GetSaldo();
}

We could also choose to use the namespace. If so, we do not have to refer to the namespace explicitly. This is what we did with the std namespace at the beginning of Chapter 1.

#include <iostream>
using namespace std...

Tech Concepts

Programming languages

Tech Tools

Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

50+ new titles added per month and exclusive early access to books as they are being written.

Microsoft Visual C++ Windows Applications by Example

By : Stefan Bjornander, Stefan Björnander

Microsoft Visual C++ Windows Applications by Example

By: Stefan Bjornander, Stefan Björnander

Overview of this book

Namespaces

Microsoft Visual C++ Windows Applications by Example

By : Stefan Bjornander, Stefan Björnander

Microsoft Visual C++ Windows Applications by Example

By: Stefan Bjornander, Stefan Björnander

Overview of this book

Namespaces

Confirmation

Buy this book with your credits?

Submit Your Feedback

Create a Free Account To Continue Reading

Sign in to activate your 7-day free access