convert uppercase or lowercase NAME toupper, tolower, toupper_l, tolower_l - convert uppercase or lowercase LIBRARY Standard C librar...convert uppercase or lowercase NAME toupper, tolower, toupper_l, tolower_l - convert uppercase or lowercase LIBRARY Standard C librar...convert uppercase or lowercase NAME toupper, tolower, toupper_l, tolower_l - convert uppercase or lowercase LIBRARY Standard C librar...convert uppercase or lowercase NAME toupper, tolower, toupper_l, tolower_l - convert uppercase or lowercase LIBRARY Standard C librar......the current locale which can used in other functions that employ a locale handle, such as toupper_l (3). This is done by applying duplocale () to the value returned by the follo…...e following names are valid in all locales. "tolower" - realizes the tolower (3) mapping "toupper" - realizes the toupper (3) mapping RETURN VALUE The wctrans () function return…...will convert accented letters into random characters. SEE ALSO isascii (3), tolower (3), toupper (3)...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…...char , it must be cast to unsigned char , as in the following example: char c; ... res = toupper((unsigned char) c); This is necessary because char may be the equivalent of sign…