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The following C++ function is supposed to return a valid pointer to a string, but actually has a bug. string* greeting() { string 3 (Hello

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The following C++ function is supposed to return a valid pointer to a string, but actually has a bug. string* greeting() { string 3 ("Hello there!"); return &3; (a) Describe why the code is wrong using full sentences. (b) Rewrite the function in a way that solves the bug

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