C++ 11 Template ... 与Decltype 测试

#include <iostream>
#include "string"

using namespace std;

template<typename T>
void func_one(T& val)
{
cout << val << endl << "finished";
}

//不可用
template< typename T, typename... Args>
auto func_two(int index, T& val, const Args&... args) -> decltype(T)
{
static int curIndex = 0;
if (curIndex == index)
{
return val;
}
else
{
return func_two<T,Args...>(index, args...);
}

}

template<typename T,typename... Args>
void func_one(T& val, const Args&... args)
{
cout << val << endl;
cout << "Test:" << endl;
func_test(args...);
//func_one(args...);
}

void func_test(double d, int i, string str)
{
cout << d << endl << i << endl << str << endl;
}

int main()
{
int x;

func_one("1",2.0f,3,"4");

cin>>x;

return 0;
}