Implement the given improvements to the string class

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Question: Implement some of the following improvements to the string class.

a. Add ! (which is false if the string is zero length).

b. Add the * and * = operators to expand into multiple copies. For instance, if s is equal to " ab" , then s * =3 turns s into " ababab" .

c. Add the left shift operator, which shifts the string x positions. Can you think of a way to alter the class implementation to make shifting a fast operation?

d. Add lowercase and uppercase member functions.

Reference no: EM131679530

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