万能函数模板

#include <iostream>
#include <string>
using namespace std;

template<typename Function,class... Args>
inline auto FunWrapper(Function &&f, Args &&...args)->decltype(f(std::forward<Args>(args)...))
{
	return f(std::forward<Args>(args)...);
}

void Test1()
{
	cout << "Test" << endl;
}

int Test2()
{
	return 5;
}

string Test3(string s1, string s2)
{
	return s1 + s2;
}

int main(int argc,char* argv[])
{
	FunWrapper(Test1);
	cout << FunWrapper(Test2) << endl;
	cout << FunWrapper(Test3,"My name is ","FYH ") << endl;
	system("pause");
	return 0;
}