How to access private data in class? – tccicomputercoaching.com

How to access private data in class? – tccicomputercoaching.com The Friend function and friend class are the techniques used to access the private members of a class by using friend keyword.

A friend function is required when a function needs to access two or more independent classes, internal members.

For example, #include <iostream.h> class Distance { private: int meter; public: Distance(): meter(0) { } //friend function friend int addFive(Distance); }; // friend function definition

int addFive(Distance d) { //accessing private data from non-member function d.meter += 5; return d.meter; } int main() { Distance D; cout<<"Distance: "<< addFive(D); return 0; } Output Distance: 5

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