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Why we use the “dynamic_cast” type conversion?

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Why we use the “dynamic_cast” type conversion?

(a) result of the type conversion is a valid

(b) to be used in low memory

(c) result of the type conversion is an invalid

(d) it is used for storage

I got this question by my college director while I was bunking the class.

The question is from Conversion Operators in division Source Files, Classes and Operator Overloading in C++ of C++

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Right answer is (a) result of the type conversion is a valid

For explanation: It is used to check that operators and operands are compatible after conversion.

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