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Which keyword is used to declare the friend function?

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Which keyword is used to declare the friend function?

(a) firend

(b) friend

(c) classfriend

(d) myfriend

The question was asked in an online interview.

This interesting question is from Friends in division Source Files, Classes and Operator Overloading in C++ of C++

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Best answer
Right option is (b) friend

The explanation: friend keyword is used to declare a friend function in C++.

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