width <<endl; } // Main function for the program int main() { Box box; // set box width without member function box.setWidth(10.0); // Use friend function to print the wdith. printWidth( box ); return 0; } When the above code is compiled and executed, it produces the following...
// C++ program to demonstrate example of// friend function with class#include <iostream>usingnamespacestd;classNumber{private:inta;public:voidgetNum(intx);//declaration of friend functionfriendvoidprintNum(Number NUM); };//class member function definitionsvoidNumber::getNum(intx)...
// classes_as_friends1.cpp// compile with: /cclassB;classA{public:intFunc1( B& b );private:intFunc2( B& b ); };classB{private:int_b;// A::Func1 is a friend function to class B// so A::Func1 has access to all members of BfriendintA::Func1( B& ); };intA::Func1(...
Example 1: Working of friend Function // C++ program to demonstrate the working of friend function#include<iostream>usingnamespacestd;classDistance{private:intmeter;// friend functionfriendintaddFive(Distance);public: Distance() : meter(0) {} };// friend function definitionintaddFive(Distance d...
1. The friend function can access private and protected data members. 2. Friend function cannot call with the help of Object of that class, it is call by using normal ‘C’ function. 3. Generally, friend function can take Object as a argument. 4. Friend function is not in scope of cl...
friend return_Type function_Name(arg_1, arg_2,…); }; Example of Friend Function: Now, let us look into an example program to understand the concept of the friend function in C++. In the below example program, we have the “Friend_Demo” class. It has three different types of data ...
What is Friend Function in C++?Friend functions in C++ allow external functions or classes to access private and protected members of a class. This can be useful for sharing data between different parts of a program, but it is important to use friend functions carefully to maintain the ...
friend void display(demo}; //Friend function declaration }; void display(demo dd1) { cout<
如何在C ++代码中使用朋友函数? In a C++ program, using a friend function requires a few steps. First, the friend keyword must be used to designate the function as a friend of the class. Then, the function must be defined outside of the class, but have access to all of the private me...
结果1 题目下列选项中,不是C++关键字的是( )。 A. class B. function C. friend D. virtual 相关知识点: 试题来源: 解析 B 正确答案:B 解析:class、friend、virtual都是C++的关键字,而funtion是VB的关键字。 知识模块:C++语言概述反馈 收藏