File Checking

I need to know how to check if a file exists.
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mikeTmikeAsked:
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dbruntonQuid, Me Anxius Sum?Commented:
function FileExists(FileName: string) : boolean;
var
  f: file;
begin
  ($I-}
  Assign(f, FileName);
  Reset(f);
  Close(f);
  ($I+}
  FileExists := (IOResult = 0) and (FileName <> '');
end;

begin
  if FileExists(ParamStr(1)) then
    Writeln('Flle exists)
  else
    Writeln('File not found');
end.

This code gets the file name from the command line.

I've taken this code straight from my Turbo Pascal book.
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anasexpertCommented:
function FileExists(FileName: string) : Byte;
var
  f: file;
begin
  {$I-}
  Assign(f, FileName);
  Reset(f);
  case  IOResult  of
   2:FileExists :=2;
   3:FileExists :=3;
   else FileExists :=0;
  end;{end case}
  {$I+}
  Close(f);
 
  end;

begin
  case FileExists(ParamStr(1)) of
  2: Writeln('Flle exists) ;
  3: Writeln('Path not found');
  0: Writeln('Path not found');
end;
end.

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Pascal

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