unsigned char造句怎么写

4、For example, if a function returns an unsigned char value but calculated a result of 256 or more (or -1 or less), errno would be set to ERANGE and the function would return some irrelevant value.

2、If you need more, read the data in as a stream of unsigned char objects and do the math.

1、Binary source data must be a single-dimensioned array of unsigned char.

3、Sets the first num bytes of the block of memory pointed by ptr to the specified value (interpreted as an unsigned char).