Member function copyPiece, which returns a specified substring; member function oneChar, which returns a specified single character; and member function setChar, which changes a specified character

An overloaded version of the $==$ operator $($note that only the string values have to be equal; the values of maxLength need not be the same$)$

An overloaded version of $+$ that performs concatenation of strings of type StringVar

An overloaded version of the extraction operator $>>$ that reads one word $($as opposed to inputLine, which reads a whole line$)$