% This macro source file is from the four volume series
% "TeX in Practice" by Stephan von Bechtolsheim, published
% 1993 by Springer-Verlag, New York.
% Copyright 1993 Stephan von Bechtolsheim.
% No warranty or liability is assumed.
% This macro may be copied freely if no fees other than
% media cost or shipping charges are charged and as long
% as this copyright and the following source code itself
% is not changed. Please see the series for further information.
%
% Version: 1.0
% Date: May 1, 1993
%
%
% This source code is documented in 28.4.2, p. III-466.
% Original source in file "io1.TEX", starting line 977.
\wlog{L: "inputc.tip" ["io1.TEX," l. 977, p. III-466]}%
% This file DOES belong to format "texip."
\InputD{fexist.tip}
\catcode`\@ = 11
\def\InputC #1{%
    \if\FileExistsConditional{#1}%
        \input #1
    \else
        \message{\string\InputC: there is no file "#1".}% 
    \fi
}
\def\InputCWithAt #1{%
    \catcode`@ = 11
    \InputC{#1}% 
    \catcode`@ = 12
}
\catcode`\@ = 12