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ISUPPER(3)	       FreeBSD Library Functions Manual		    ISUPPER(3)

NAME
     isupper --	upper-case character test

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     isupper(int c);

DESCRIPTION
     The isupper() function tests for any upper-case letter.  The value	of the
     argument must be representable as an unsigned char	or the value of	EOF.

     In	the ASCII character set, this includes the following characters	(with
     their numeric values shown	in octal):

     101 ``A''	   102 ``B''	 103 ``C''     104 ``D''     105 ``E''
     106 ``F''	   107 ``G''	 110 ``H''     111 ``I''     112 ``J''
     113 ``K''	   114 ``L''	 115 ``M''     116 ``N''     117 ``O''
     120 ``P''	   121 ``Q''	 122 ``R''     123 ``S''     124 ``T''
     125 ``U''	   126 ``V''	 127 ``W''     130 ``X''     131 ``Y''
     132 ``Z''

RETURN VALUES
     The isupper() function returns zero if the	character tests	false and
     returns non-zero if the character tests true.

COMPATIBILITY
     The 4.4BSD	extension of accepting arguments outside of the	range of the
     unsigned char type	in locales with	large character	sets is	considered
     obsolete and may not be supported in future releases.  The	iswupper()
     function should be	used instead.

SEE ALSO
     ctype(3), iswupper(3), toupper(3),	ascii(7)

STANDARDS
     The isupper() function conforms to	ISO/IEC	9899:1990 (``ISO C90'').

FreeBSD	11.2			 July 17, 2005			  FreeBSD 11.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | COMPATIBILITY | SEE ALSO | STANDARDS

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