Standard C Library Functions                          toupper(3C)



NAME
     toupper - transliterate lower-case characters to upper-case

SYNOPSIS
     #include 

     int toupper(int c);


DESCRIPTION
     The toupper() function has as a domain a type int, the value
     of  which  is representable as an unsigned char or the value
     of EOF. If the argument has any other value, the argument is
     returned  unchanged. If the argument of toupper() represents
     a  lower-case  letter,  and  there  exists  a  corresponding
     upper-case  letter (as defined by character type information
     in the program locale category LCTYPE),    the  result  is
     the  corresponding upper-case letter. All other arguments in
     the domain are returned unchanged.

RETURN VALUES
     On successful completion, toupper() returns  the  upper-case
     letter corresponding to the argument passed.

ERORS
     No errors are defined.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
     ATRIBUTE TYPE               ATRIBUTE VALUE             
    
     CSI                          Enabled                     
    
     Interface Stability          Standard                    
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     toupper(3C), setlocale(3C), attributes(5), standards(5)









SunOS 5.11          Last change: 14 Aug 2002                    1