small funptr example

#include <iostream>

int my_if(bool condition, void (*do_this)(), void(*do_that)())
{if (condition) do_this(); else do_that();}

void print_true(){ std::cout<< "THIS IS TRUE :)" << std::endl; }
void print_false(){ std::cout<< "THIS IS FALSE :(" << std::endl; }

int main()
{
    my_if(1==1, print_true, print_false);
    // equals:
    if(1==1)
        print_true();
    else
        print_false();
}