%% 
%%  A DANTE-Edition example
%% 
%%  Beispiel 02-23-1 auf Seite 97.
%% 
%%  Copyright (C) 2010 H. Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

%%Run also: >>  << 
% Show page(s) 1

\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{355.65944pt}
\setlength\parindent{0pt}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}

\usepackage{tabularx,widetable}

\begin{document}
\begin{tabular*}{\linewidth}{|l|c@{\kern\tabcolsep\vrule\extracolsep{\fill}}c|}\hline
Spalte A & Breitere Spalte B & longtable*\\\hline
\end{tabular*}\par\bigskip
\begin{tabularx}{\linewidth}{|l|X|X|}\hline
Spalte A & Breitere Spalte B & tabularx\\\hline
\end{tabularx}\par\bigskip
\begin{widetable}{\linewidth}{|l|c|c|}\hline
Spalte A & Breitere Spalte B & widetable\\\hline
\end{widetable}
\end{document}