From: harry potter [mailto:[EMAIL PROTECTED]
>hi vijay,
>
>This is the code for swapping:-
>
>void swap(int &a, int &b)
>{
>a=a+b;
>a=a-b;
>b=a-b;
>cout<<"\n a is"<<a<<"\n b is"<<b;
>}
This breaks in two instances:
#include <limits.h>
int x=y=INT_MAX, z=10;
//(1)
swap(x, y); // undefined behaviour
//(2)
swap(z, z); // z==0 after this call.
--
PJH
"...one of the main causes of the fall of the Roman Empire was that,
lacking zero, they had no way to indicate successful termination of
their C programs." - Robert Firth
Alderley plc, Arnolds Field Estate, The Downs, Wickwar, Gloucestershire, GL12
8JD, UK
Tel: +44(0)1454 294556 Fax: +44 (0)1454 299272
Website : www.alderley.com Sales : [EMAIL PROTECTED] Service : [EMAIL
PROTECTED]
This email and its contents are confidential and are solely for the use of the
intended recipient. If you are not the original recipient you have received it
in error and any use, dissemination, forwarding, printing or copying of this
email is strictly prohibited. Should you receive this email in error please
immediately notify [EMAIL PROTECTED]
This email has been scanned for viruses, however you should always scan emails
with your own systems prior to opening.
------------------------ Yahoo! Groups Sponsor --------------------~-->
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/EbFolB/TM
--------------------------------------------------------------------~->
To unsubscribe : [EMAIL PROTECTED]
Yahoo! Groups Links
<*> To reply to this message, go to:
http://groups.yahoo.com/group/Programmers-Town/post?act=reply&messageNum=4912
Please do not reply to this message via email. More information here:
http://help.yahoo.com/help/us/groups/messages/messages-23.html
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Programmers-Town/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
