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#### Filepos

Declaration:
  Function Filepos (Var F : Any file type) : Longint;
Description:
  Filepos returns the current record position of the file-pointer in file F. It cannot be invoked with a file of type Text. A compiler error will be generated if this is attempted.
Errors:
  Depending on the state of the {$I} switch, a runtime error can be generated if there is an error. In the {$I-} state, use IOResult to check for errors.
See also:
  Filesize (496)

Listing: refex/ex23.pp

Program Example23;
{ Program to demonstrate the FilePos function. }
Var F : File of Longint;
L,FP : longint;
begin
{ Fill a file with data :
Each position contains the position ! }
Assign (F,'test.tmp');
Rewrite (F);
For L:=0 to 100 do
begin
FP:=FilePos(F);
Write (F,FP);
end;
Close (F);
Reset (F);
{ If all goes well, nothing is displayed here. }
While not (Eof(F)) do
begin
FP:=FilePos (F);
Read (F,L);
if L<>FP then
Writeln ('Something wrong: Got ',l,' on pos ',FP);
end;
Close (F);
Erase (f);
end.

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