29 Sep
2002
29 Sep
'02
5:53 a.m.
Kunal Gangakhedkar wrote:
In this case, what you need to do is advance the arg
pointer.
Something like
for( i =0 ; i < 4; i++)
{
if((*(arg + i) = (char *)malloc(n * sizeof(char))) == NULL)
LHS should be *(arg + i * sizeof(char *))
As pointers(arg is pointer to pointer) are NOT 1 byte long.
Size depends on system. Generally 4 byte.
Amish.
29 Sep
29 Sep
9:01 p.m.
New subject: Buggy C prog
On Sunday 29 September 2002 09:31 am, Amish Mehta wrote:
No, it does not need to be....
Pointers are internally ints (unsigned ??), no matter whatever be the
system....
So, it will automatically take whatever the system uses for address
manipulation.
For example, on DOS, int = 2 bytes(16 bits) = pointer.
That is why you need far & near pointers in DOS to access longer memory
addresses.
In case of Win32 ( GCC )/Linux, int = 4 bytes(32 bits) = pointer.
Hence, a single pointer can access all the addresses.
That is why, programs using 16 bit code on linux need to define new ints
having 16 bits - like GTK's gint16.
--
Kunal Gangakhedkar
---------------------------
MCA Student @ VJTI
kunal(a)vjtimca.net
kgangakhedkar(a)softhome.net
kgangakhedkar(a)hotpop.com
---------------------------
Do Miami a favor. When you leave, take someone with you.
for( i =0 ; i
< 4; i++)
{
if((*(arg + i) = (char *)malloc(n * sizeof(char))) == NULL)
LHS should be *(arg + i * sizeof(char *))
As pointers(arg is pointer to pointer) are NOT 1 byte long.
Size depends on system. Generally 4 byte. 
30 Sep
30 Sep
8:44 a.m.
New subject: Buggy C prog
Amish Mehta wrote:
Kunal Gangakhedkar wrote:
> In this case, what you need to do is advance the arg
> pointer. Something like
>
> for( i =0 ; i < 4; i++) { if((*(arg + i) = (char *)malloc(n
> * sizeof(char))) == NULL)
LHS should be *(arg + i * sizeof(char *)) As
pointers(arg is
Nope. arg + 1 will increment sizeof(char*) bytes, not 1.
Pointer arithmetic.
Manish
9:20 a.m.
New subject: [OT]APPEAL for Freebies/Gifts/PROMOS for WORKSHOP
Hello Luggers,
On behalf of the ILUG-BOM the following are gonna
conduct a workshop on Gnu-Linux in sangli and are also
looking forward to having such regular workshops all
over the country.
--> http://members.fortunecity.com/csesarit/
-- Dr Nagarjuna
-- Sameer D.S
-- Dinesh Shah
-- Ravindra Jaju
-- G Tapeshwar
-- Shankar R
-- Trevor Warren
We need FREEBIES/GIFTS/BOOKS/Gnu-Linux
toys............etc that could be handed out by us as
prizes for the various competitions that we are gonna
conduct during the course of the workshop.
We would be ready to put up banners/advertising info
if that would help propogate the DONORS message.
Call me on 9820349221/8312930-31 and speak to me.
This is on priority as the workshop at Rajaram Bapu
College Of Engineering is coming up this week end.
Trevor
=====
( >- GNU/LINUX, It's all about CHOICE -< )
/~\ __ http://www.qmailtheeasyway.com __ /~\
| \) / mailto: trevor.w(a)media.mit.edu \ (/ |
|_|_ \ Research Asst, MediaLab / _|_|
\___________________________________/
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7734
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3 comments
4 participants
participants (4)
-
Amish Mehta -
Kunal Gangakhedkar -
Manish Jethani -
Trevor Warren