NAME    [Toc]    [Back]

     toupper - lower case to upper case letter conversion

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>

     int
     toupper(int c);

DESCRIPTION    [Toc]    [Back]

     The toupper() function converts a lower-case letter to the corresponding
     upper-case letter.

RETURN VALUES    [Toc]    [Back]

     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    [Toc]    [Back]

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

STANDARDS    [Toc]    [Back]

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

BSD                              June 29, 1991                             BSD