//UseDll.cpp:顯式鏈接方式調(diào)用Dll
#include "iostream.h"									//輸入輸出庫
#include "Windows.h"//使用API函數(shù)
typedef int (*PFNFactorial)(int);					//宏定義FactorialFun函數(shù)指針類型
void main()										//主函數(shù)
{
	int n;
	cout<<"本程序采用顯式鏈接的方式測試開發(fā)的Factorial DLL\n";
	while(true)												//循環(huán)計算
	{
		HINSTANCE hdll;									//DLL的句柄
		PFNFactorial facfun;//函數(shù)指針
		hdll=LoadLibrary("..\\Factorial DLL.dll");				//LoadLibrary函數(shù)裝載DLL
		if(hdll!=NULL)
		{
		//GetProcAddress函數(shù)獲得FactorialFun函數(shù)地址
			facfun=(PFNFactorial)GetProcAddress(hdll,"FactorialFun");
		}
		cout<<"請輸入用于計算階乘的值：\n";
		cin>>n;												//等待用戶輸入
		int result=facfun(n);									//調(diào)用DLL函數(shù)進(jìn)行計算
		cout<<"運算結(jié)果為：\n"<<result<<endl;
		FreeLibrary(hdll);									//釋放DLL
	}
}