_toupper()

convert lowercase letter to uppercase 

Function


SYNOPSIS

#include <ctype.h>

int _toupper(int c);


DESCRIPTION

The macro _toupper() is equivalent to toupper() except that the argument c must be a lowercase letter.


PARAMETERS

c 

Is an integer, whose value is representable as a lowercase letter.


RETURN VALUES

If successful, _toupper() returns the uppercase letter corresponding to the argument passed. Arguments outside the domain cause undefined results.


CONFORMANCE

UNIX 98.


MULTITHREAD SAFETY LEVEL

MT-Safe.


PORTING ISSUES

None.


AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition


SEE ALSO

Functions:
_tolower(), isascii(), islower(), isupper(), setlocale(), tolower(), toupper()


PTC MKS Toolkit 10.3 Documentation Build 39.