This function determines whether a character is an alphabetic character. This determination is based on the semantics of the language selected by the user during setup or through Control Panel.
BOOL IsCharAlpha( char ch )
true if the test char is an alphabetic ,otherwise false.
char ch = 'a';
//change ch to '&' to see different result
bool bRet = IsCharAlpha(ch);
printf("\'%c\' is in alphabet\n",ch);
printf("\'%c\' is not in alphabet\n",ch);