#include <iostream>

template<typename F>
class Test {
private:
    F f;

public:
    Test (F f) : f(f) {}

    template<typename... Args>
    void call (Args... a) {
        f(a...);
    }
};

void func (int a) {
    std::cout << a << std::endl;
}

int main () {
    Test<void(*)(int)> test(func);

    test.call(2);

    return 0;
}