// Example program
#include <iostream>
#include <string>

void (*foo)(int);

void foo_real(int n)
{
    n = 50;
    std::cout << "Hello PICKLES" << n;
}

void CallAFunc(void(*func)(int))
{
    func(50);
}

int main()
{
  foo = foo_real;
  CallAFunc(foo);
}