Tag: Friend Function

Interview Questions

Difference Between Friend Function and Member Function

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A Friend function is a function defined outside the class, but it has access to all private and protected members of the class. To declare a friend function, it’s prototype must be declared inside the class, preceding it with keyword “friend”. Check Friend Function for more information.
A Member function is a function defined in the class as a member of the function. It is usually declared inside the class definition.

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C++ / Programming Questions

Friend Function Explained With Simple Example

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A Friend function is a function defined outside the class, but it has access to all private and protected members of the class. To declare a friend function, it’s prototype must be declared inside the class, preceding it with keyword “friend”. For eg:

class Demo
{
    private:
        int m;
        int y;

    public:
        friend int sum (Demo d);
        void print_val ();
        Demo (int m, int y);
};
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