latex运行出错\documentclass{beamer}\usepackage{beamerthemesplit}

documentclass{beamer}

usepackage{beamerthemesplit}

title{Example Presentation Created with the Beamer Package}

author{Till Tantau}

date{today}

begin{document}

frame{titlepage}

section*{Outline}

frame{tableofcontents}

section{Introduction}

subsection{Overview of the Beamer Class}

frame {

frametitle{Features of the Beamer Class}

begin{itemize}

item<1-> Normal LaTeX class.

item<2-> Easy overlays.

item<3-> No external programs needed.

end{itemize}

}

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