Question: Variable userString is assigned with a 2 - character string read from input. Replace the first character in userString with ' & ' if the

Variable userString is assigned with a 2-character string read from input. Replace the first character in userString with '&' if the character is alphabetic. Otherwise, userString is not changed.
Ex 1: If the input is px, then the output is:
&x
Ex 2: If the input is 4c, then the output is:in C++

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