C / C++ / MFC

// The following ifdef block is the standard way of creating macros which make exporting 
// from a DLL simpler. All files within this DLL are compiled with the EXAMPLE_EXPORTS
// symbol defined on the command line. this symbol should not be defined on any project
// that uses this DLL. This way any other project whose source files include this file see 
// EXAMPLE_API functions as being imported from a DLL, wheras this DLL sees symbols
// defined with this macro as being exported.
#ifdef EXAMPLE_EXPORTS
#define EXAMPLE_API __declspec(dllexport)
#else
#define EXAMPLE_API __declspec(dllimport)
#endif

// This class is exported from the example.dll
class EXAMPLE_API CExample {
public:
	CExample(void);
	// TODO: add your methods here.
};

extern EXAMPLE_API int nExample;

EXAMPLE_API int fnExample(void);

// example.cpp : Defines the entry point for the DLL application.
//

#include "stdafx.h"
#include "example.h"

BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					 )
{
    switch (ul_reason_for_call)
	{
		case DLL_PROCESS_ATTACH:
		case DLL_THREAD_ATTACH:
		case DLL_THREAD_DETACH:
		case DLL_PROCESS_DETACH:
			break;
    }
    return TRUE;
}


// This is an example of an exported variable
EXAMPLE_API int nExample=0;

// This is an example of an exported function.
EXAMPLE_API int fnExample(void)
{
	return 42;
}

// This is the constructor of a class that has been exported.
// see example.h for the class definition
CExample::CExample()
{ 
	return; 
}

int *array[SIZE];
for(int i=0;i<SIZE;i++)
    array[i] = new int;

int **array = new int*[SIZE];

int a = 10;
int b = 20;
int c = 30;
// you can point to existing integer buffers
array[0] = &a;
array[1] = &b;

// you can allocate new integers
array[2] = new int;
*array[2] = 50;

// you can allocate an array if integers to be held in this new pointer.
array[3] = new int[10];
array[3][0] = 100;