Upper- and Lower-Case Chars

$\newcommand{\N}{\mathbb N} \newcommand{\Z}{\mathbb Z} \newcommand{\Q}{\mathbb Q} \newcommand{\R}{\mathbb R} \newcommand{\lt}{<} \newcommand{\gt}{>} \newcommand{\amp}{&} \definecolor{fillinmathshade}{gray}{0.9} \newcommand{\fillinmath}[1]{\mathchoice{\colorbox{fillinmathshade}{$\displaystyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\textstyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\scriptstyle \phantom{\,#1\,}$}}{\colorbox{fillinmathshade}{$\scriptscriptstyle\phantom{\,#1\,}$}}} $

Section 7.3 Upper- and Lower-Case Chars

Each letter in our alphabet has a lower-case and an upper-case version. Since we may be interested in converting from upper- to lower-case or from lower- to upper-case it is beneficial for us to examine whether there might be a pattern between the two ASCII codes that correspond to the lower- and upper-case versions of a given letter.

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Have you found the pattern? If not, go back to the previous code window and keep experimenting until you do. Or take a close look at the ASCII table.

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Activity 7.2.

Using the pattern you found, write a C program that first asks the user to enter a lowercase letter and then converts that letter to the corresponding uppercase letter and prints the letter (with no other text) out to the screen.

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What line of code did you add?

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