関連ワード:  write a program to illustrate friend function    write a program to demonstrate friend function in c++    write a program to implement friend function in c++    write a program to implement friend function    write a program to demonstrate friend function    write a program to implement friend function using two different classes    write a program to demonstrate friend function in c++ example    write a c++ program to illustrate friend function    write a program to demonstrate friend function and friend class    write a program to demonstrate friend function and friend class in c++  
結果 : write a program to illustrate friend function