Null-terminated string

kjolh...@algonet.se

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

Null-terminated string

I've tried to read a null-terminated string with the readln command
but the compiler sais that it can't read that type of variables.
How do I read null-terminated-strings???

PS I use BP7.0 and $X+

Regards Henrik

Hilton Evan

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

Re:Null-terminated string

kjolh...@algonet.se wrote in article <32f4c6a1.4388...@news.algonet.se>...

Quote

> I've tried to read a null-terminated string with the readln command
> but the compiler sais that it can't read that type of variables.
> How do I read null-terminated-strings???

> PS I use BP7.0 and $X+

> Regards Henrik

You have to read the string into a conventional
string, then assign it to your null terminated string
with StrPCopy.

e.g.

var s:string;
p:array[0..255]of char;
Readln(S);
strpcopy(P,S);

--
Hilton Evans
***********************************************************
The two most important things in life are personal
health and time ... H.Evans 1995
**********************************************************
Chempen+ Chemical Structure Drawing
Software for Windows
http://www.ici.net/cust_pages/hfevans/chempen.htm

w..

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

Re:Null-terminated string

Quote

In article <32f4c6a1.4388...@news.algonet.se>, kjolh...@algonet.se wrote::
>I've tried to read a null-terminated string with the readln command
>but the compiler sais that it can't read that type of variables.
>How do I read null-terminated-strings???

>PS I use BP7.0 and $X+

var a:array[0..size] of char;
begin
readln(a);
writeln(a)
end;

You may not read strings using a variable of type PCar because the RTL
wouldn't know how much memory is available. In this case a maximum of
size-1 chars will be read and a #0 will be appended. Same procedure for
regular text files.

Regards
wo

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