I'd like to put the assign and reset of a text file into a function, and
then use the function to return a line from the file, without needing to
close the file then re assign and reset every time (for performance
reasons) - see below for my attempt.
This doesn't work because I guess the file handles etc are local to the
function are volatile, so cannot be accessed in the main program Is there a
simple way to fix this ie to make this function work. Of course one can
const in a function to make normal variables non volatile...but files etc?
TIA for any ideas...John
main program...
get_line('tmp.tmp,0), to assign and reset;
{get lines}
str1:=get_line('tmp.tmp,1);
str2:=get_line('tmp.tmp,1)
....
{close)
get_line('tmp.tmp,2)
assume function is defined as
function get_line( fname;string;flag:longint):string;
var f:text
begin
if flag=0 then
begin
assign(f,fname);
reset(f);
end;
if flag=1 then
while not eof(f) do
begin
readln(f);
end;
if flag=2 then close(f);
get_line;=f;
end;
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