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What will happen while using pass by reference?

(a) The values of those variables are passed to the function so that it can manipulate them

(b) The location of variable in memory is passed to the function so that it can use the same memory area for its processing

(c) The function declaration should contain ampersand (& in its type declaration)

(d) The function declaration should contain $

I got this question in examination.

Query is from Overloaded Function Names topic in chapter Functions, Namespaces & Exceptions in C++ of C++

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The correct answer is (b) The location of variable in memory is passed to the function so that it can use the same memory area for its processing

Explanation: In pass by reference, we can use the function to access the variable and it can modify it. Therefore we are using pass by reference.

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