関連ワード:  write a c++ program using friend function    write a c++ program to overload binary operator using friend function    write a c++ program to swap two numbers using friend function    write a c++ program to add two numbers using friend function    write a c++ program to add complex numbers using friend function    write a c++ program to add two complex numbers using friend function    write a c++ program based on implementation overloading operator using friend function    write a c++ program to implement friend function    write a c++ program to demonstrate friend function    write a c++ program to illustrate friend function  
結果 : write a c++ program using friend function