%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example A-3-11 on page 877.
%%
%% Copyright (C) 2004 Frank Mittelbach, Michel Goossens,
%%    Johannes Braams, David Carlisle, and Chris Rowley
%%
%% 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.
%%

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.0pt}
\StartShownPreambleCommands
\usepackage{ifthen}
\newcommand{\QU}[2]{%
 \ifthenelse{\(\equal{#1}{ENG}\and\equal{#2}{yes}\)
    \or      \(\equal{#1}{FRE}\and\equal{#2}{oui}\)}%
            {``OK''}{``not OK''}}
\StopShownPreambleCommands
\begin{document}
You agree \QU{ENG}{yes} or don't \QU{ENG}{no}. \par
D'accord  \QU{FRE}{oui} ou pas   \QU{FRE}{non}?
\end{document}