#include <iostream>
#include <Windows.h>
//#include <dlfcn.h>  windows 上没有这个头文件
// 声明DLL中的函数原型
typedef void (*PrintWelcomeMessage)();
typedef int (*Sub)(int, int);
typedef bool (*IsEven)(int);

int main() {
    HMODULE dllHandle = LoadLibrary("..\\lib\\libdynLib.dll"); // 加载DLL

    if (dllHandle != nullptr) {
        // 获取DLL中的函数地址
        PrintWelcomeMessage printWelcomeMessage = (PrintWelcomeMessage)GetProcAddress(dllHandle, "printWelcomeMessage");
        Sub sub = (Sub)GetProcAddress(dllHandle, "sub");
        IsEven isEven = (IsEven)GetProcAddress(dllHandle, "isEven");

        if (printWelcomeMessage != nullptr && sub != nullptr && isEven != nullptr) {
            // 调用DLL中的函数
            printWelcomeMessage();
            int a = 22;
            int b = 2;
            int result = sub(a, b);
            bool even = isEven(result);

            std::cout << a << " - " << b << " = " << result << std::endl;
            std::cout << "IsEven(" << result << ") = " << even << std::endl;
        } else {
            std::cerr << "Failed to get function address from DLL." << std::endl;
        }
        // 卸载DLL
        FreeLibrary(dllHandle);
    } else {
        std::cerr << "Failed to load DLL." << std::endl;
    }

    return 0;
}