To store characters and letters, C employs the char type. However, the char type is an integer type because c stores integer numbers rather than characters. Char values in c are stored in 1 byte of memory and have a value range of -128 to 127 or 0 to 255.
Character data is stored in a fixed-length field by the char data type. Data can be a string of single-byte or multibyte letters, numbers, and other characters supported by your database locale’s code set. A char column’s size is byte-based, not character-based.