带算法的浮动标题

Question

我有一个要使用的模板，并想在其中添加一个算法。模板和算法的简短版本将是

    \RequirePackage{fix-cm,cmap}
\documentclass[11pt, a4paper,abstracton,numbers=noenddot,listof=totoc,bibliography=totoc,twoside,openright,cleardoublepage=plain]{scrreprt}

% Algorithms
\usepackage[ruled, vlined, linesnumbered,algosection,algo2e]{algorithm2e}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{algorithm}[theorem]{Algorithm}
\newenvironment{example}{\begin{quote}{\bf Example:}}{\end{quote}}



%% here your document starts
\begin{document}
\begin{algorithm}
  \caption{Euclid's algorithm}\label{euclid}
    \Procedure{Euclid}{$a,b$}\Comment{The gcd of $a$ and $b$}
      \State $r \gets a \bmod b$
      \While{$r \neq 0$}\Comment{We have the answer if $r$ is $0$}
        \State $a \gets b$
        \State $b \gets r$
        \State $r \gets a \bmod b$
      \EndWhile\label{euclidendwhile}
      \State \textbf{return} $b$\Comment{The gcd is $b$}
    \EndProcedure
\end{algorithm}


\listofalgorithmes

\end{document}

如果我像这样尝试，我会收到大量错误消息：

 \caption outside of float
 Undefined control sequence.\Procedure
....

我究竟做错了什么？

Answer 1

你混淆了算法包语法。你使用的算法示例代码源自algorithmicx包裹当你正在加载时algorithm2e。以下是来自algorithm2e文档：

\documentclass{scrreprt}

\usepackage[ruled,vlined,linesnumbered,algosection,algo2e]{algorithm2e}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{algorithm}[theorem]{Algorithm}

\begin{document}

\begin{algorithm2e}
  \SetAlgoLined
  \KwData{this text}
  \KwResult{how to write algorithm with \LaTeX2e }
  initialization\;
  \While{not at end of this document}{
    read current\;
    \eIf{understand}{
      go to next section\;
      current section becomes this one\;
    }{
      go back to the beginning of current section\;
    }
  }
  \caption{How to write algorithms}
\end{algorithm2e}

\listofalgorithmes

\end{document}

algorithm由于没有提供有关模板的上下文，因此不完全清楚为什么需要类似定理的环境。