C++函數導出dll

dll.h
#ifdef DLL_API
#else
#define DLL_API _declspec(dllimport)
#endif // DLL_API

DLL_API void RightsDeclare();
DLL_API void SayHello();

dll.cpp

#define DLL_API _declspec(dllexport)
#include"dll.h"
#include<iostream>
void RightsDeclare()
{
    std::cout << "rights reserved by wite\n";
}
void SayHello()
{
    std::cout << "hello,everyone\n";
}

使用方法：
包含dll.h，引用dll.lib以及dll.dll
RightsDeclare()打印rights reserved by wite