vc 下 c++检测内存泄露代码

#include <stdlib.h>
#include <crtdbg.h>
#define _CRTDBG_MAP_ALLOC

#define new  new(_NORMAL_BLOCK, __FILE__, __LINE__)


int _tmain(int argc, _TCHAR* argv[])
{
	int *p=new int;

	_CrtDumpMemoryLeaks();
	return 0;

}