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Which is used to keep the call by reference value as intact?

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Which is used to keep the call by reference value as intact?

(a) static

(b) const

(c) absolute

(d) virtual

I have been asked this question during an internship interview.

Query is from Argument Passing in chapter Functions, Namespaces & Exceptions in C++ of C++

1 Answer

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The correct option is (b) const

The explanation is: Because const will not change the value of the variables during the execution.

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