% File exam.cls

\ProvidesClass{exam}[1999/04/02 by F.J.Wright@Maths.QMW.ac.uk]
\NeedsTeXFormat{LaTeX2e}[1998/06/01]

\RequirePackage{ifthen}
\newboolean{NZQRC}

\DeclareOption{BSc}{\def\BSc@MSc{B.Sc.}}
\DeclareOption{MSc}{\def\BSc@MSc{M.Sc.}}

\DeclareOption{NZQRC}{\setboolean{NZQRC}{true}%
  \newcommand{\mbb}[1]{\ensuremath{\mathbb{#1}}}%
  \newcommand{\N}{\mbb{N}}%
  \newcommand{\Z}{\mbb{Z}}%
  \newcommand{\Q}{\mbb{Q}}%
  \newcommand{\R}{\mbb{R}}%
  \newcommand{\C}{\mbb{C}}}

\ExecuteOptions{BSc}
\ProcessOptions*

\LoadClass[12pt]{article}[1998/05/05]

\ifthenelse{\boolean{NZQRC}}{%
  \RequirePackage{amsfonts}[1996/11/03]}{}

\setlength{\textwidth}{6.5in}
\setlength{\textheight}{9in}
\setlength{\oddsidemargin}{0in}
\setlength{\evensidemargin}{\oddsidemargin}
\setlength{\topmargin}{-0.2in}

% Exam header:

\newcommand{\examtitle}[1]{\newcommand{\exam@title}{#1}}
\newcommand{\examtime}[1]{\newcommand{\exam@time}{#1}}

\AtBeginDocument{%
\vspace*{-0.4in}\noindent
{\Large\bfseries Queen Mary and Westfield College} \\
{\large\sffamily UNIVERSITY OF LONDON} \\[0.2in]
{\Large\sffamily \BSc@MSc\ EXAMINATION} \\[0.2in]
{\large\bfseries \exam@title} \\[0.2in]
\exam@time
\vspace{0.2in}
}

% Exam footer:

\def\@oddfoot{\makebox[0pt][l]{\textrm{\ifnum\thepage=1
  \copyright\ QMW, University of London \number\year\fi}}%
  \hfil\textrm{\thepage}\hfil%
  \makebox[0pt][r]\leftmark}
% \leftmark outputs the LAST "left" mark set by \markboth
\let\@evenfoot\@oddfoot

\AtEndDocument{%
  \markboth{\textit{[End of examination paper.]}}{}}

% Section command and rubric environment:

\newcommand{\long@questions}{true}

\renewcommand{\section}[2][]%
  {\noindent{\large\bfseries SECTION #2}
  \ifthenelse{\equal{#1}{short}}%
    {\renewcommand{\long@questions}{false}}%
    {\renewcommand{\long@questions}{true}}}

% \section ought to suppress an immediately following page break, but
% since the following text will be in an environment this is tricky!

\newenvironment{rubric}[1][]%
  {\newboolean{long@}%
  \ifthenelse{\equal{#1}{}}%
    {\setboolean{long@}{\long@questions}}%
    {\ifthenelse{\equal{#1}{short}}%
      {\setboolean{long@}{false}}{\setboolean{long@}{true}}}%
   \begin{quote}\em}%
  {\end{quote}
   \ifthenelse{\boolean{long@}}{\vspace{\baselineskip}}{}}

% Question environments:

\newcounter{qno}
\newenvironment{questions}[1][]%
  {\begin{list}{\textbf{\arabic{qno}.}}%
   {\usecounter{qno}%
    \ifthenelse{\(\equal{#1}{} \and \equal{\long@questions}{false}\)
     \or \equal{#1}{short}}{}%
      {\setlength{\itemsep}{3\baselineskip}}}}%
  {\end{list}%
   \markboth{\textit{[Next section overleaf.]}}{}
   \vspace{3\baselineskip}}

\newboolean{LastQuestion}
\newenvironment{question}[1][]%
  {\item%
   \markboth{\textit{[This question continues overleaf \ldots]}}{}%
   \ifthenelse{\equal{#1}{last}}%
    {\setboolean{LastQuestion}{true}}%
    {\setboolean{LastQuestion}{false}}}%
  {\ifthenelse{\boolean{LastQuestion}}%
   {\markboth{\textit{[End of examination paper.]}}{}}% last question
   {\markboth{\textit{[Next question overleaf.]}}{}}}

% Sub-question environments:

\newcounter{subqno}
\newenvironment{subquestions}%
  {\begin{list}{(\alph{subqno})}{\usecounter{subqno}}}%
  {\end{list}}
\let\subquestion\item

\newcounter{subsubqno}
\newenvironment{subsubquestions}%
  {\begin{list}{(\roman{subsubqno})}{\usecounter{subsubqno}}}%
  {\end{list}}
\let\subsubquestion\item

% Miscellaneous useful commands:

\renewcommand{\th}{\ensuremath{^\mathit{th}}}
% By default, \th represents thorn in the Cork encoding (T1) etc.

% End of file exam.cls