/******************************************************************************

                              Online C++ Compiler.
               Code, Compile, Run and Debug C++ program online.
Write your code in this editor and press "Run" button to compile and execute it.

*******************************************************************************/

#include <iostream>

using namespace std;

int b(bool print_state) {
    if(print_state)
        cout << "print state here" << endl;
    return 2;
}

int a(decltype(b) ptr_b, bool x) {
    return ptr_b(x);
}

int main()
{
    cout<<"Hello World";
    auto ret = a(&b, true);
    cout << ret << endl;
    return 0;
}