VC创建DLL动态链接库的方法

#ifdef DLL_API #else#define DLL_API extern "C" _declspec(dllimport)#endifDLL_API int a(int cnt);DLL_API int b(int cnt);

#define DLL_API extern "C" _declspec(dllexport)#include "t.h"

#define DLL_API extern "C" _declspec(dllexport)#include "t.h"int a(int cnt){return cnt+1;}int b(int cnt){return cnt+10;}