对于多项选择题考试，我使用麦克萨姆包。似乎没有允许我打印问题总数的命令。有没有办法定义这样的命令？例如：
The total number of questions in this exam is: \numquestions
此命令是为常规exam文档类定义的。我尝试将其添加到我的序言中：
\newcommand{\numquestions}{\mc@totalNumberOfQuestions}
但这给了我一个未定义的控制序列。这是一个小例子。由于命令，它不会编译\numquestions。请注意，此示例是 mcexam 附带的 example.tex 文件的精简版本：
\documentclass[a4paper]{article}
\usepackage[output=exam
,numberofversions=4
,version=1
,seed=1
,randomizequestions=true
,randomizeanswers=true
,writeRfile=false
]{mcexam}
% Packages used for special things
\usepackage{tikz,framed}
% Set headers and footers
\usepackage{fancyhdr,lastpage}
\pagestyle{fancy}
\fancyhf{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{1pt}
\lfoot{\mctheversion}
\rfoot{Page \thepage\ of \pageref{LastPage}}
% Ensure each question+answers is printed entirely on the same page.
\usepackage{calc}
\renewenvironment{setmcquestion}{\begin{minipage}[t]{\linewidth-\labelwidth}}{\end{minipage}\par}
\makeatletter
\newcommand{\numquestions}{\mc@totalNumberOfQuestions} %DOES NOT WORK
\makeatother
\begin{document}
\begin{center}
\bfseries\LARGE Midterm Exam
\end{center}
\begin{framed}
\centering\bfseries\Large\MakeUppercase{\mctheversion}
\end{framed}
\mcifoutput{concept,exam}{
\bigskip
\noindent Name: \dotfill\\[.5\baselineskip]
\noindent Student Number: \dotfill\\[.5\baselineskip]
\noindent Program: \dotfill
\vspace{2\baselineskip}
\noindent\textbf{Instructions:}
\begin{itemize}[nosep]
\item This exam has \numquestions questions. %THIS THROWS AN UNDEFINED CONTROL SEQUENCE ERROR
\end{itemize}
}
\begin{mcquestions}
\question What is the color of the sky?
\begin{mcanswerslist}[fixlast]
\answer[correct] blue
\answer green
\answer red
\answer yellow
\answer none of the above
\end{mcanswerslist}
\begin{mcexplanation}
If you look up to the sky and there are no clouds, you'll see it is blue.
\end{mcexplanation}
\begin{mcnotes}
This question had a large proportion of good answers last year.
\end{mcnotes}
\question Which figure is a square?
\begin{mcanswers}
\begin{tabular}{@{}cccc}
\answer{1}{\tikz{\draw (-0.66,0)--(0.66,0)--(0,1)--cycle;}}&
\answer{2}{\tikz{\draw (0,0)--(2,0)--(2,1)--(0,1)--cycle;}}&
\answer[correct]{3}{\tikz{\draw (0,0)--(1,0)--(1,1)--(0,1)--cycle;}}&
\answer{4}{\tikz{\draw (0,0) circle[radius=0.5];}}\\
\answernum{1}&\answernum{2}&\answernum{3}&\answernum{4}\\
\end{tabular}
\end{mcanswers}
\end{mcquestions}
\end{document}
答案1
这个mcexam包裹是有趣的。顺便说一句，它没有内部用来收集问题总数的功能。我们可以添加一个。
\documentclass[a4paper]{article}
\usepackage[output=exam
,numberofversions=4
,version=1
,seed=1
,randomizequestions=true
,randomizeanswers=true
,writeRfile=false
]{mcexam}
% Packages used for special things
\usepackage{tikz,framed}
\usepackage{fancyhdr,lastpage,totcount,xpatch}
\usepackage{calc}
% Set headers and footers
\pagestyle{fancy}
\fancyhf{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{1pt}
\lfoot{\mctheversion}
\rfoot{Page \thepage\ of \pageref{LastPage}}
% Ensure each question+answers is printed entirely on the same page.
\renewenvironment{setmcquestion}
{\begin{minipage}[t]{\linewidth-\labelwidth}}
{\end{minipage}\par}
\newtoggle{questionscounted}
\global\togglefalse{questionscounted}
\makeatletter
\newcommand{\patch@mcquestions}{%
\iftoggle{questionscounted}
{}
{%
\setcounter{numquestions}{\value{mc@counter}}%
\global\toggletrue{questionscounted}
}%
}
\newcounter{numquestions}
\regtotcounter{numquestions}
\xpatchcmd{\env@mcquestions@process}
{\mc@setQuestionAndAnswerNumbers}
{\mc@setQuestionAndAnswerNumbers\patch@mcquestions}
{}{}
\makeatother
\begin{document}
\begin{center}
\bfseries\LARGE Midterm Exam
\end{center}
\begin{framed}
\centering\bfseries\Large\MakeUppercase{\mctheversion}
\end{framed}
\mcifoutput{concept,exam}{
\bigskip
\noindent Name: \dotfill\\[.5\baselineskip]
\noindent Student Number: \dotfill\\[.5\baselineskip]
\noindent Program: \dotfill
\vspace{2\baselineskip}
\noindent\textbf{Instructions:}
\begin{itemize}[nosep]
\item This exam has \total{numquestions} questions. %THIS THROWS AN UNDEFINED CONTROL SEQUENCE ERROR
\end{itemize}
}
\begin{mcquestions}
\question What is the color of the sky?
\begin{mcanswerslist}[fixlast]
\answer[correct] blue
\answer green
\answer red
\answer yellow
\answer none of the above
\end{mcanswerslist}
\begin{mcexplanation}
If you look up to the sky and there are no clouds, you'll see it is blue.
\end{mcexplanation}
\begin{mcnotes}
This question had a large proportion of good answers last year.
\end{mcnotes}
\question Which figure is a square?
\begin{mcanswers}
\begin{tabular}{@{}cccc}
\answer{1}{\tikz{\draw (-0.66,0)--(0.66,0)--(0,1)--cycle;}}&
\answer{2}{\tikz{\draw (0,0)--(2,0)--(2,1)--(0,1)--cycle;}}&
\answer[correct]{3}{\tikz{\draw (0,0)--(1,0)--(1,1)--(0,1)--cycle;}}&
\answer{4}{\tikz{\draw (0,0) circle[radius=0.5];}}\\
\answernum{1}&\answernum{2}&\answernum{3}&\answernum{4}\\
\end{tabular}
\end{mcanswers}
\end{mcquestions}
\end{document}
另一种解决方案（但我更喜欢另一个）。
\documentclass[a4paper]{article}
\usepackage[output=exam
,numberofversions=4
,version=1
,seed=1
,randomizequestions=true
,randomizeanswers=true
,writeRfile=false
]{mcexam}
% Packages used for special things
\usepackage{tikz,framed}
\usepackage{fancyhdr,lastpage}
\usepackage{calc}
% Set headers and footers
\pagestyle{fancy}
\fancyhf{}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{1pt}
\lfoot{\mctheversion}
\rfoot{Page \thepage\ of \pageref{LastPage}}
% Ensure each question+answers is printed entirely on the same page.
\renewenvironment{setmcquestion}
{\begin{minipage}[t]{\linewidth-\labelwidth}}
{\end{minipage}\par}
\makeatletter
\AtEndDocument{%
\immediate\write\@auxout{\xdef\string\number@of@questions{\mc@totalNumberOfQuestions}}%
}
\def\numberofquestions{%
\@ifundefined{number@of@questions}{??}{\number@of@questions}%
}
\makeatother
\begin{document}
\begin{center}
\bfseries\LARGE Midterm Exam
\end{center}
\begin{framed}
\centering\bfseries\Large\MakeUppercase{\mctheversion}
\end{framed}
\mcifoutput{concept,exam}{
\bigskip
\noindent Name: \dotfill\\[.5\baselineskip]
\noindent Student Number: \dotfill\\[.5\baselineskip]
\noindent Program: \dotfill
\vspace{2\baselineskip}
\noindent\textbf{Instructions:}
\begin{itemize}[nosep]
\item This exam has \numberofquestions\ questions. %THIS THROWS AN UNDEFINED CONTROL SEQUENCE ERROR
\end{itemize}
}
\begin{mcquestions}
\question What is the color of the sky?
\begin{mcanswerslist}[fixlast]
\answer[correct] blue
\answer green
\answer red
\answer yellow
\answer none of the above
\end{mcanswerslist}
\begin{mcexplanation}
If you look up to the sky and there are no clouds, you'll see it is blue.
\end{mcexplanation}
\begin{mcnotes}
This question had a large proportion of good answers last year.
\end{mcnotes}
\question Which figure is a square?
\begin{mcanswers}
\begin{tabular}{@{}cccc}
\answer{1}{\tikz{\draw (-0.66,0)--(0.66,0)--(0,1)--cycle;}}&
\answer{2}{\tikz{\draw (0,0)--(2,0)--(2,1)--(0,1)--cycle;}}&
\answer[correct]{3}{\tikz{\draw (0,0)--(1,0)--(1,1)--(0,1)--cycle;}}&
\answer{4}{\tikz{\draw (0,0) circle[radius=0.5];}}\\
\answernum{1}&\answernum{2}&\answernum{3}&\answernum{4}\\
\end{tabular}
\end{mcanswers}
\end{mcquestions}
\end{document}