Standard C++ Library Copyright 1998, Rogue Wave Software, Inc.
islower - Determines whether a character is lower case.
#include <locale> template <class charT> bool islower (charT c, const locale& loc) const;
The islower_function returns true if the character passed as a parameter is lower case. Otherwise the function returns false. The check is made using the ctype facet from the locale parameter.
Other 'is' functions, locale, ctype