#include <iostream>
#include <array>
struct Foo {
    int one()   { std::cout << "one\n"; return 1; }
    int two()   { std::cout << "two\n"; return 2; }
    int three() { std::cout << "three\n"; return 3; }
};
std::array<int(Foo::*)(), 3> a = {{
    &Foo::one,
    &Foo::two,
    &Foo::three,
}};
int main() {
    Foo f;
    std::cout << "1: " << (f.*a[0])() << "\n";
    std::cout << "2: " << (f.*a[1])() << "\n";
    std::cout << "3: " << (f.*a[2])() << "\n";
}

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