05-18-2005
"select" function sequence
Hi folks,
As we all know, the "select" function give a number to each element as the number of elements in the select.
for example:
I have a program which ask a user to select a language:
===============================================================================
Please select the primary language
===============================================================================
1) Arabic 6) Hebrew 11) Portuguese
2) Chinese 7) Indic 12) Russian
3) French 8) Italian 13) Spanish
4) German 9) Japanese 14) Other
5) Greek 10) Korean 15) Quit language menu
The select has 15 elements and therefore,the select gives a number from 1 to 15 to each element.
My question is:
I want to assign the number "99" to the option "Quit language menu".
Is it possible?
Is it possible to influence on the select sequence that if i have n elements in the select ,and i want to add a new element ,the next element (n+1) won't get the number (n+1)?
Thanks in advance.
Nir
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LEARN ABOUT DEBIAN
explain_select_or_die
explain_select_or_die(3) Library Functions Manual explain_select_or_die(3)
NAME
explain_select_or_die - blah blah and report errors
SYNOPSIS
#include <libexplain/select.h>
void explain_select_or_die(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
DESCRIPTION
The explain_select_or_die function is used to call the select(2) system call. On failure an explanation will be printed to stderr,
obtained from explain_select(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
explain_select_or_die(nfds, readfds, writefds, exceptfds, timeout);
nfds The nfds, exactly as to be passed to the select(2) system call.
readfds The readfds, exactly as to be passed to the select(2) system call.
writefds
The writefds, exactly as to be passed to the select(2) system call.
exceptfds
The exceptfds, exactly as to be passed to the select(2) system call.
timeout The timeout, exactly as to be passed to the select(2) system call.
Returns:
This function only returns on success. On failure, prints an explanation and exits.
SEE ALSO
select(2)
blah blah
explain_select(3)
explain select(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2008 Peter Miller
explain_select_or_die(3)