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Append

Declaration:
Procedure Append (Var F : Text);
Description:
Append opens an existing file in append mode. Any data written to F will be appended to the file. Only text files can be opened in append mode. After a call to Append, the file F becomes write-only.

File sharing is not taken into account when calling Append.

Errors:
If the file doesn’t exist when appending, a run-time error will be generated. This behaviour has changed on Windows and Linux platforms, where in versions prior to 1.0.6, the file would be created in append mode.
See also:
Rewrite (559),Close (465), Reset (558)

Listing: refex/ex3.pp

Program Example3;

{ Program to demonstrate the Append function. }

Var f : text;

begin
  Assign (f,'test.txt');
  Rewrite (f);            { file is opened for write, and emptied }
  Writeln (F,'This is the first line of text.txt');
  close (f);
  Append(f);              { file is opened for write, but NOT emptied.
                            any text written to it is appended.}
  Writeln (f,'This is the second line of text.txt');
  close (f);
end.

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