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Reference for unit 'System' (#rtl)

WriteLn

Write variable to a text file and append newline

Declaration

Source position: line 0

procedure Writeln(

Args: Arguments

); procedure WriteLn(

var F: Text;

Args: Arguments

);

Description

WriteLn does the same as Write for text files, and emits a Carriage Return - LineFeed character pair after that. If the parameter F is omitted, standard output is assumed. If no variables are specified, a Carriage Return - LineFeed character pair is emitted, resulting in a new line in the file F.

Remark:

Under linux and unix, the Carriage Return character is omitted, as customary in Unix environments.

Errors

If an error occurs, a run-time error is generated. This behavior can be controlled with the {$I} switch.

Example

Program Example75;

{ Program to demonstrate the Write(ln) function. }

Var
  F : File of Longint;
  L : Longint;

begin
  Write ('This is on the first line ! '); { No CR/LF pair! }
  Writeln ('And this too...');
  Writeln ('But this is already on the second line...');
  Assign (f,'test.tmp');
  Rewrite (f);
  For L:=1 to 10 do
    write (F,L); { No writeln allowed here ! }
  Close (f);
end.

lazarus-ccr.sourceforge.net

Write		Write variable to a text file
Read		Read from a text file into variable
Readln		Read from a text file into variable and goto next line
Blockwrite		Write data from memory to an untyped file

WriteLn

Declaration

Description

Errors

See also

Example