#include <iostream>

/*
    Here we have a Class which has a Function that is declared outside of the Class itself ; 
    We just reference the Function inside the class and later outside create a Function with this structure:
        class::function()
*/

using namespace std;

class outside {
    public:
        void coolFunc();
};

void outside::coolFunc() {
    cout << "I am a cool Outside Function\n";
};

int main() {
    outside classobj;
    classobj.coolFunc(); // No cout needed here for some reason ; idk why
}