freepascal.compiler/docs/sysutex/ex72.pp

Program Example72;

{ This program demonstrates the FormatBuf function }

Uses sysutils;

Var 
  S : ShortString;

Const 
  Fmt : ShortString =  'For some nice examples of fomatting see %s.';
    
Begin
  S:='';
  SetLength(S,FormatBuf (S[1],255,Fmt[1],Length(Fmt),['Format']));
  Writeln (S);
End.