Separating class code into a header and cpp file

by

The class declaration goes into the header file. It is important that you add the #ifndef include guards. Most compilers now also support #pragma once. Also I have omitted the private, by default C++ class members are private.

// A2DD.h
#ifndef A2DD_H
#define A2DD_H

class A2DD
{
  int gx;
  int gy;

public:
  A2DD(int x,int y);
  int getSum();

};

#endif

and the implementation goes in the CPP file:

// A2DD.cpp
#include "A2DD.h"

A2DD::A2DD(int x,int y)
{
  gx = x;
  gy = y;
}

int A2DD::getSum()
{
  return gx + gy;
}

More Related Contents:

  1. When should you use a class vs a struct in C++?
  2. What is the difference between private and protected members of C++ classes?
  3. What are the differences between struct and class in C++?
  4. C++ virtual function from constructor [duplicate]
  5. How do you create a static class in C++?
  6. Will an ’empty’ constructor or destructor do the same thing as the generated one?
  7. What is the difference between a concrete class and an abstract class?
  8. Semicolon after class declaration braces
  9. Making a vector of instances of different subclasses
  10. What is the purpose of forward declaration?
  11. Is there a performance difference between i++ and ++i in C++?
  12. How to call a parent class function from derived class function?
  13. How can I use cout
  14. Is the PIMPL idiom really used in practice?
  15. C++11 allows in-class initialization of non-static and non-const members. What changed?
  16. How to copy/create derived class instance from a pointer to a polymorphic base class?
  17. using namespace std; in a header file
  18. How to create two classes in C++ which use each other as data?
  19. How do you use the non-default constructor for a member?
  20. Mesh class called with default constructor not working OpenGL C++
  21. C++ inherit from multiple base classes with the same virtual function name
  22. How do you implement a class in C? [closed]
  23. Diamond inheritance (C++)
  24. Is “inline” implicit in C++ member functions defined in class definition
  25. How to use a class in DLL?
  26. Somehow register my classes in a list
  27. Mixing class and struct
  28. When do programmers use Empty Base Optimization (EBO)
  29. Why can’t redefine type names in class in C++?
  30. Template type deduction in C++ for Class vs Function?

Leave a Comment