C / C++ / MFC

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

class S {
   char data[100000];
};
class ThisIsATypeWithAVeryLongNameAndLotsOfWords {
   char data;
};

<span style="color: green;">// The header file tester.h</span>
<span style="color: blue;">#ifndef</span> _TESTER_H_
<span style="color: blue;">#define</span> _TESTER_H_
<br> <br>

<span style="color: green;">// The interface definition:</span>
<span style="color: blue;">class</span> Public
{
<span style="color: blue;">public</span>:
	<span style="color: blue;">virtual int</span> GetX() = 0;
};
<br> <br>
<span style="color: green;">// This function returns a pointer to an instance of an implementing class.</span>
Public * CreatePublic(<span style="color: blue;">int</span> x);
<br> <br>
<span style="color: blue;">#endif</span> // _TESTER_H_

<span style="color: green;">// The cpp file tester.cpp</span>
<span style="color: blue;">#include</span> "tester.h"
<br> <br>
<span style="color: green;">// The implementing class.</span>
<span style="color: blue;">class</span> Private: <span style="color: blue;">public</span> Public
{
<span style="color: blue;">public</span>:

	Private(<span style="color: blue;">int</span> x): m_x(x)
	{

	}
<br> <br>
	<span style="color: blue;">int</span> GetX()
	{
		return m_x;
	}
<br> <br>
<span style="color: blue;">private</span>:
	<span style="color: blue;">int</span>		m_x;
};
<br> <br>
Public * CreatePublic(<span style="color: blue;">int</span> x)
{
	return new Private(x);
}

<span style="color: blue;">#include</span> "tester.h"
<br> <br>
<span style="color: blue;">int</span> main()
{
	<span style="color: green;">// Can't do this because Private is declared in the header file.</span>
	<span style="color: green;">//Private  priv = new Private(2);</span>
<br> <br>
	Public * pPub = CreatePublic(42);

	<span style="color: blue;">delete</span> pPub;
<br> <br>
	<span style="color: blue;">return</span> 0;
}