code. compile. run. debug. share.
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/******************************************************************************
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 "MainClass.hpp"
#include "FriendClass.hpp"
int main()
{
const int dim = 2;
MainClass<dim> main_class;
FriendClass<dim> friend_class;
friend_class.print_main_class(main_class);
return 0;
}
#ifndef MAIN_CLASS_HPP
#define MAIN_CLASS_HPP
template <int dim>
class MainClass
{
public:
MainClass(){};
private:
template <int friend_dim>
class FriendClass;
friend class FriendClass<dim>;
double private_member = 3.0;
};
#endif
#ifndef FRIEND_CLASS_CPP
#define FRIEND_CLASS_CPP
#include "MainClass.hpp"
template <int dim>
class FriendClass
{
public:
FriendClass(){};
void print_main_class(MainClass<dim> &main_class);
};
#endif
#include "MainClass.hpp"
template class MainClass<2>;
template class MainClass<3>;
#include "FriendClass.hpp"
#include <iostream>
template <int dim>
void FriendClass<dim>::print_main_class(MainClass<dim> &main_class)
{
std::cout << main_class.private_member << std::endl;
}
template class FriendClass<2>;
template class FriendClass<3>;
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