Syntax:

    #include <cctype>
    int isxdigit( int ch );

The function isxdigit() returns non-zero if its argument is a hexadecimal digit (i.e. A-F, a-f, or 0-9). Otherwise, zero is returned.

Related Topics: isalnum, isalpha, iscntrl, isdigit, isgraph, ispunct, isspace