Change output of version in mcexam

Question

I'm working in the mcexam package and want to take the output of \mctheversion and change it to an letter value. That is "Version 1" is changed to "A" or "Form A", "Version 2" to "B" or "Form B", etc. Thank you

\documentclass{exam}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{pifont}
\graphicspath{{./images/}}
\usepackage[output=exam, numberofversions=3, seed=6, randomizeanswers=false, randomizequestions=true, version=1]{mcexam}
\usepackage{xkeyval, etoolbox, xstring, environ, pgf, enumitem, longtable, newfile}

\newcommand\mcversionlabelfmt[1]{\Alph{#1}}

\begin{document}
    
    \begin{coverpages}

        
        \begin{center}
            \begin{LARGE}
                AP Statistics\\
                Unit \# Test - Unit Name\\
                Form \mctheversion \\
            \end{LARGE}
            
        \end{center}
        
    \end{coverpages}
\end{document}

Answer 1

To change “Version” into “Form” you need to redefine \mc@babel@Version. If you are using package babel with one of the language supported by mcexam, this has to be done after \begin{document} or using \AtBeginDocument, because depending on the detected language mcexam.sty also defines it using \AtBeginDocument.

To change the format of the counter you have to redefine \mcversionlabelfmt. The original definition as shown in section 5.2 of the mcexam user manual is:

\newcommand\mcversionlabelfmt[1]{\Roman{#1}}

So the default is a (uppercase) Roman number.

To redefine it to show a uppercase letter, you have to replace \newcommand by \renewcommand and \Roman by \Alph.

So a minimized version of your code but with “Form A” instead of “Version I” would be:

\documentclass{exam}
\usepackage[output=exam, numberofversions=3, seed=6, randomizeanswers=false, randomizequestions=true, version=1]{mcexam}

\renewcommand{\mcversionlabelfmt}[1]{\Alph{#1}}
\makeatletter
\AtBeginDocument{%
  \renewcommand{\mc@babel@Version}{Form}%
}
\makeatother

\begin{document}
    
    \begin{coverpages}

        
        \begin{center}
            \begin{LARGE}
                AP Statistics\\
                Unit \# Test - Unit Name\\
                \mctheversion \\
            \end{LARGE}
            
        \end{center}
        
    \end{coverpages}
\end{document}

Note: If you use mcexam without babel (or currently also with babel, but without option dutch) you don't need \AtBeginDocument in the example above:

\documentclass{exam}
\usepackage[output=exam, numberofversions=3, seed=6, randomizeanswers=false,
randomizequestions=true, version=1]{mcexam}

\usepackage[english]{babel}% added

\renewcommand{\mcversionlabelfmt}[1]{\Alph{#1}}
\makeatletter
\renewcommand{\mc@babel@Version}{Form}% does not work, if you change babel
                                % option `english` into `dutch`
\makeatother

\begin{document}
    
    \begin{coverpages}

        
        \begin{center}
            \begin{LARGE}
                AP Statistics\\
                Unit \# Test - Unit Name\\
                \mctheversion \\
            \end{LARGE}
            
        \end{center}
        
    \end{coverpages}
\end{document}

But, because this could change, e.g., if mcexam supports more languages, I would recommend to nevertheless use the solution with \AtBeginDocument. As explained, this would also work with language dutch:

\documentclass{exam}
\usepackage[output=exam, numberofversions=3, seed=6, randomizeanswers=false,
randomizequestions=true, version=1]{mcexam}

\usepackage[dutch]{babel}% added to show the problem

\renewcommand{\mcversionlabelfmt}[1]{\Alph{#1}}
\makeatletter
\AtBeginDocument{% needed because of \usepackage[dutch]{babel}
  \renewcommand{\mc@babel@Version}{Form}
}
\makeatother

\begin{document}
    
    \begin{coverpages}

        
        \begin{center}
            \begin{LARGE}
                AP Statistics\\
                Unit \# Test - Unit Name\\
                \mctheversion \\
            \end{LARGE}
            
        \end{center}
        
    \end{coverpages}
\end{document}

If you'd remove the \AtBeginDocumet{% and the corresponding } in this example, you would not get “Form” but “Versie” (Dutch for “Version”).