计算文档后面的项目数

Question

问题很简单：如何使我的计数器（\themycounter）的输出显示以下内容6？

\documentclass{article}
\newcounter{mycounter}
\newcommand{\myitem}{\refstepcounter{mycounter}}
\begin{document}
I have some reason to tally up some items here\myitem \myitem \myitem.
But how many items are there in total in this document?
Are there {\themycounter} items?
Surely there are more since I am tallying up some more items now\myitem \myitem \myitem.
\end{document}

我确信答案不需要像显示计数器的后续值（这就是我冒昧在这里提问的原因）。

Answer 1

您可以使用totcount包；您创建并注册计数器\newtotcounter{<counter>}然后使用\total{<counter>}（需要两到三次运行）：

\documentclass{article}
\usepackage{totcount}
\newtotcounter{mycounter}
\newcommand{\myitem}{\refstepcounter{mycounter}}

\begin{document}
I have some reason to tally up some items here\myitem \myitem \myitem.
But how many items are there in total in this document?
Are there {\themycounter} items? No, there are \total{mycounter}, since I am tallying up some more items now\myitem \myitem \myitem.
\end{document}

Answer 2

egreg回答以下问题问题你也链接了：（另请参阅下一个更好的变体）

\documentclass{article}
\newcounter{mycounter}
\newcommand{\myitem}{\refstepcounter{mycounter}}
\begin{document}
I have some reason to tally up some items here\myitem \myitem \myitem.
But how many items are there in total in this document?
Are there \ref{finalmyitem} items?
Surely there are more since I am tallying up some more items now\myitem \myitem \myitem\label{finalmyitem}.
\end{document}

此方法（源自评论）避免了必须 \label在最后一个之后手动添加\myitem：

\documentclass{article}
\newcounter{mycounter}

%%   \newcommand{\myitem}{\refstepcounter{mycounter}}
%% \AtEndDocument{\addtocounter{mycounter}{-1}\myitem\label{finalmyitem}}

% again a variant:
\newcommand{\myitem}{\stepcounter{mycounter}}
\AtEndDocument{\addtocounter{mycounter}{-1}\refstepcounter{mycounter}\label{finalmyitem}}

\begin{document}
I have some reason to tally up some items here\myitem \myitem \myitem.
But how many items are there in total in this document?
Are there {\ref{finalmyitem}} items?
Surely there are more since I am tallying up some more items now\myitem \myitem \myitem.
\end{document}