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

HOW TO ACCESS PRIVATE DATA IN CLASS? TCCICOM PUT E RCOACHI N G.COM

TCCICOMPUTERCOACHING.COM

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.

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

TCCICOMPUTERCOACHING.COM For example, // 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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