toupper(3) - NetBSD Manual Pages

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TOUPPER(3)                NetBSD Programmer's Manual                TOUPPER(3)


NAME

     toupper - lower case to upper case letter conversion


SYNOPSIS

     #include <ctype.h>

     int
     toupper(int c);


DESCRIPTION

     The toupper() function converts a lower-case letter to the corresponding
     upper-case letter.  If the argument is a lower-case letter, the toupper()
     function returns the corresponding upper-case letter if there is one;
     otherwise the argument is returned unchanged.


SEE ALSO

     isascii(3),  isalnum(3),  isalpha(3),  iscntrl(3),  isdigit(3),
     isgraph(3),  islower(3),  isprint(3),  ispunct(3),  isspace(3),
     isupper(3),  isxdigit(3),  toascii(3),  toupper(3),  stdio(3),  ascii(7)


STANDARDS

     The toupper() function conforms to ANSI X3.159-1989 (``ANSI C'').

4.4BSD                           June 29, 1991                               1