DragonFly On-Line Manual Pages

TOUPPER(3)	      DragonFly Library Functions Manual	    TOUPPER(3)

NAME
     toupper -- lower case to upper case letter conversion

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     toupper(int c);

DESCRIPTION
     The toupper() function converts a lower-case letter to the corresponding
     upper-case letter.  For single C chars locales the value of the argument
     is representable as an unsigned char or the value of EOF.

RETURN VALUES
     If the argument is a lower-case letter, the toupper() function returns
     the corresponding upper-case letter if there is one; otherwise the argu-
     ment is returned unchanged.

SEE ALSO
     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), tolower(3), ascii(7)

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

DragonFly 3.5			 June 4, 1993			 DragonFly 3.5