Write some C++ Code

Create Directories

First we create a simple C++ project.

1. Create a folder as project root directory

   mkdir example-project
   cd example-project

2. Create two subfolders, one for the source, one for the headers:

   mkdir include
   mkdir src

You can also use different directory structure. You just have to be consistent.

Create Header File

Create a C++ Headerfile include/my-class.h

namespace MyNamespace
{
  class MyClass
  {
  public:
    int myVar;

    int myFunction() const;
  };
}

Create Source File

Create a C++ Sourcefile include/my-class.cpp

#include <my-class.h>

namespace MyNamespace
{
  int MyClass::myFunction(int x) const
  {
    char letter = '4' + std::string("2");

    return myVar - x + 42;
  }
}