# How to reference a created counter?

(I'm sorry for my bad english) I created an accountant to do an enumeration of questions for an exercise list. Eventually I would like to make a reference to a given exercise. But the \label and \ref commands are not working for me. Could someone help me?

\documentclass[a4paper,12pt]{report}
\usepackage{amsmath,amsfonts,amscd,bezier}%gislaine
\usepackage{amssymb}
\usepackage[dvips]{graphicx}
\usepackage{pdfsync}
\usepackage{color}
\usepackage{hyperref}

\newcounter{eq}
\refstepcounter{eq}
%\setcounter{eq}{1}
%%%%%%%%%%%%%%%%%%%%

\begin{document}

\eq \label{eq1} Let $X$ be such that....

\eq \label{eq2}In this exercise consider $Y=2$ ...

\eq \label{eq3} Consider, in exercise \ref{eq1} (I would like to see the issue number 1)

\eq Here, consider in exercise \ref{eq2} (I would like to see the issue number 2) $Y=3$...

\eq Here, consider in exercise \ref{eq3} (I would like to see the issue number 3) $Y=5$...

\end{document}

• Please, do not use \bf which has been obsolete for at least 12-15 years, and try \textbf{text} or {\bfseries text} – Moriambar May 19 '17 at 20:24
• I see, but try and stop using it since it has some drawbacks (other than not being supported) e.g., wrong spacing – Moriambar May 19 '17 at 20:43
• Don't use pdfsync: it's invasive and very obsolete. – egreg May 19 '17 at 20:53
• \addtocounter{eq}{1} does what you want. But what you really want is \refstepcounter{eq}. – Johannes_B May 20 '17 at 5:32
• @Moura if I 1) remove \refstepcounter{eq} from your example 2) replace \addtocounter{eq}{1} with \refstepcounter{eq} in the definition of \eq I get working references. What exactly doesn't work for you? – cgnieder May 22 '17 at 17:53

All you need is to create the counter, set it, set a reference name and then you can start to reference it.

Let me elaborate with a short example.

\documentclass{article}

\usepackage{environ, hyperref, cleveref}

\newcounter{QuotCount}
\setcounter{QuotCount}{0}
%
\NewEnviron{fquote}[3][0.8]{%
\refstepcounter{QuotCount}%
\par\vspace{0.5cm}\noindent
\begin{tikzpicture} %\pbox[pos][height][inner-pos]{max-width}{text}
\node[font=\large\bfseries](box){%
\pbox{#1\linewidth}{\BODY \label{quot:#3}}};
\node[inner sep=1pt,very thin,anchor=east,pink,font=\bfseries\fontsize{48}{48}\selectfont,yshift=-5pt]at(box.north west){};
\node[inner sep=1pt,very thin,pink,anchor=west,font=\bfseries\fontsize{48}{48}\selectfont,yshift=-8pt,xshift=-2pt]at(box.south east){''};
\node[inner sep=1pt,very thin,anchor=north west,gray,font=\small\sffamily]at(box.south west){\begin{minipage}[t][1cm][t]{0.8\linewidth}
\ {#2}\end{minipage}};
\end{tikzpicture}\par
}

\crefname{QuotCount}{quote}{quotes}
\Crefname{Quotcount}{Quote}{Quotes}

\begin{document}
A designer knows that has has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.
\end{hsquote}

\Cref{quot:designer} is a quote on design used in the tufte-book.

\end{document}

• The key point here is \refstepcounter -- that's not mentioned at all -- no \refstepcounter, no working cross-referencing (unless knowing internals about \@currentlabel – user31729 May 19 '17 at 20:32

There are already packages, so you might want to go with this:

\documentclass[a4paper,12pt]{report}
\usepackage{amsmath,amsfonts,amscd,bezier}
\usepackage{amssymb}
\usepackage{color}

%%%%%%%%%%%%%%%%%%%%

\usepackage[thref]{ntheorem}
\usepackage{cleveref}
\newtheorem{exercise}{Exercise}
\newtheorem{nonum}{}

\begin{document}

\begin{exercise}\label{ex:foo}
foo
\end{exercise}

\begin{exercise}\label{ex:bar}
bar
\end{exercise}

\begin{nonum}\label{noex:foo}
foo
\end{nonum}

\begin{nonum}\label{noex:bar}
bar
\end{nonum}

References: \cref{ex:foo}, \cref{ex:bar} and \Cref{ex:foo}.

References: \cref{noex:foo}, \cref{noex:bar} and \Cref{noex:foo}.

\end{document}


Here are some manuals: http://www.ctan.org/pkg/cleveref, http://www.ctan.org/pkg/ntheorem. Here is an alternative: http://www.ctan.org/pkg/theorem.

• Thanks for your help, but I do not like the word exercise to appear, only number. – Moura May 19 '17 at 20:44
• @Moura: Please see my edits. – CampanIgnis May 19 '17 at 20:48
• I saw. Maybe I did not understand. I would not like to have exercise 1, exercise 2. Only 1, 2, – Moura May 19 '17 at 20:53
• @Moura: The recent change introduced the environments "nonum", and they only show the number, not "exercise". – CampanIgnis May 19 '17 at 20:55