Computers and Technology, 17.03.2020 03:12 eyebang

Assume the existence of a File class with boolean data member, isValid, indicating the file is ready for I/O. Write a unary operator, !, that accepts a constant File reference, and returns true if the file is not ready for I/O and false otherwise.

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Assume the existence of a File class with boolean data member, isValid, indicating the file is ready...