#include <iostream>
#include <string>
#include <tuple>
 
struct blau_t 
{
    std::string str_;
 
    explicit blau_t(std::string str) : str_(str) {}
};
 
void f(int i, int j) { std::cout << "f(" << i << "," << j  <<")\n"; }
void g(int i, double j) { std::cout << "g(" << i << "," << j  <<")\n"; }
void h (blau_t blau) { std::cout << "h -> " << blau.str_ << "\n";}
 
int main() 
{
    auto fun_array = std::make_tuple(f,g,h);
 
    std::get<0> (fun_array) (1,2);
    std::get<1> (fun_array) (1,2.5);
    std::get<2> (fun_array) (blau_t("Hallo"));
 
    return 0;
}

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