FileSize

Size of file

Declaration

Source position: systemh.inc line 618

function FileSize(

var f: file

):Int64;

Description

Filesize returns the total number of records in file F. It cannot be invoked with a file of type Text. (under linux and unix, this also means that it cannot be invoked on pipes). If F is empty, 0 is returned.

Errors

Depending on the state of the \var{\{\$I\}} switch, a runtime error can be generated if there is an error. In the \var{\{\$I-\}} state, use IOResult to check for errors.

Example

Program Example24;

{ Program to demonstrate the FileSize function. }

Var F : File Of byte;
    L : File Of Longint;

begin
  Assign (F,paramstr(1));
  Reset (F);
  Writeln ('File size in bytes : ',FileSize(F));
  Close (F);
  Assign (L,paramstr (1));
  Reset (L);
  Writeln ('File size in Longints : ',FileSize(L));
  Close (f);
end.

Notes