模板变成2

void PrintT(int& t)
{
    std::cout << "lvalue" << std::endl;
}

template <typename T>
void PrintT(T&& t)
{
    std::cout << "rvalue" << std::endl;
}

template <typename T>
void TestForward(T&& v)
{
    PrintT(v);
    PrintT(std::forward<T>(v));
    PrintT(std::move(v));
}

void Test()
{
    TestForward(1);
    int x = 1;
    TestForward(x);
    TestForward(std::forward<int>(x));
}

int main(void)
{
    Test();
    system("pause");
    return 0;
}