NAME    [Toc]    [Back]

     isupper -- upper-case character test

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>

     int
     isupper(int c);

DESCRIPTION    [Toc]    [Back]

     The isupper() function tests for any upper-case letter.  For single C
     chars locales (see multibyte(3)) the value of the argument is 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    [Toc]    [Back]

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

COMPATIBILITY    [Toc]    [Back]

     Although isupper() accepts arguments outside of the range of the unsigned
     char type in locales with large character sets, this is a 4.4BSD extension
 and the iswupper() function should be used instead for maximum
     portability.

SEE ALSO    [Toc]    [Back]

     ctype(3), iswupper(3), multibyte(3), toupper(3), ascii(7)

STANDARDS    [Toc]    [Back]

     The isupper() function conforms to ISO/IEC 9899:1990 (``ISO C89'').


FreeBSD 5.2.1			October 6, 2002 		 FreeBSD 5.2.1