编写一个小dll，供其他程序调用，新手勿喷

#include <iostream>
#include<Windows.h>
using namespace std;
typedef int(*MYdll)(int ,int );
int  main()
{
MYdll pmydll;
HINSTANCE  hLodaDll;

hLodaDll=LoadLibrary("C:\\Users\\Administrator\\Desktop\\dll.dll");
if (NULL==hLodaDll)
{
cout<<"load dll failed:"<<GetLastError()<<endl;
return 0;
}
pmydll=(MYdll)GetProcAddress(hLodaDll,"Sum");
if (NULL==pmydll)
{
cout<<"函数指针获取失败："<<GetLastError()<<endl;
return 0;
}
cout<<"求2+9和："<<(pmydll)(2,9)<<endl;
FreeLibrary(hLodaDll);
}