UNIX mail blank in the TO address


 
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Old 12-12-2013
i suppose since you are using command line arguments and assigning it to some other variables and when you do not give any one of the argument on command line the next argument becomes that argument


i.e example if you have to pass 4 arguments and if you specify only three then

i.e if suppose u pass 1st 2nd and 4th argument on command line then

the ath argument in above will become 3rd


so it would be better if you can introduce a check and let user know that if he doesny want to specify the to address can u ask then to enter a space in quotes


all pls correct me if im wrong
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ISWBLANK(3)						     Linux Programmer's Manual						       ISWBLANK(3)

NAME
iswblank - test for whitespace wide character SYNOPSIS
#include <wctype.h> int iswblank(wint_t wc); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): iswblank(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L; or cc -std=c99 DESCRIPTION
The iswblank() function is the wide-character equivalent of the isblank(3) function. It tests whether wc is a wide character belonging to the wide-character class "blank". The wide-character class "blank" is a subclass of the wide-character class "space". Being a subclass of the wide-character class "space", the wide-character class "blank" is disjoint from the wide-character class "graph" and therefore also disjoint from its subclasses "alnum", "alpha", "upper", "lower", "digit", "xdigit", "punct". The wide-character class "blank" always contains at least the space character and the control character ' '. RETURN VALUE
The iswblank() function returns nonzero if wc is a wide character belonging to the wide-character class "blank". Otherwise it returns zero. CONFORMING TO
POSIX.1-2001. NOTES
The behavior of iswblank() depends on the LC_CTYPE category of the current locale. SEE ALSO
isblank(3), iswctype(3) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. GNU
2010-09-20 ISWBLANK(3)