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pass by reference isn't discussed until cha8 #5

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5 changes: 2 additions & 3 deletions book/cha7.tex
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Expand Up @@ -549,9 +549,8 @@ \section{Character classification}
As an exercise, use the character classification and conversion
library to write functions named {\tt stringToUpper} and
{\tt stringToLower} that take a single {\tt string} as
a parameter, and that modify the string by converting all the
letters to upper or lower case. The return type should be
{\tt void}.
a parameter, and return a string with all the characters converted to
upper or lower case. The return type should be {\tt string}.

\section{Other {\tt string} functions}

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