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Which is used to use a function from one source file to another?

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Which is used to use a function from one source file to another?

(a) code

(b) declaration

(c) prototype

(d) variable

I have been asked this question in my homework.

Question is taken from Linkage topic in chapter Source Files, Classes and Operator Overloading in C++ of C++

1 Answer

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Best answer
Right option is (c) prototype

Explanation: By defining a function’s prototype in another file means, we can inherit all the features from the source function.

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