 This integer nature of codice_39 (one byte) is clearly illustrated by declarations such as

unsigned char uc = 255; /* common limit */
signed char sc = -128; /* common negative limit */
Whether the codice_39 type should be regarded as codice_32 or codice_33 by default is up to the implementation.In Pascal, characters and integers are distinct types.The inbuilt compiler functions codice_48 and codice_49 can be used to typecast single characters to the corresponding integer value of the character set in use, and vice versa.