What is the difference between char and unsigned char?
c, char, unsigned-char
Solution
You're asking about two different languages but, in this respect, the answer is (more or less) the same for both. You really should decide which language you're using though.
Differences:
- they are distinct types
- it's implementation-defined whether `char` is signed or unsigned
Similarities:
- they are both integer types
- they are the same size (one byte, at least 8 bits)
If you're simply using them to transfer raw byte values, with no arithmetic, then there's no practical difference.
Problem
(Edited change C/C++ to C) Please help me to find out a clean clarification on `char` and `unsigned char` in C. Specially when we transfer data between embedded devices and general PCs (The difference between buffer of `unsigned char` and plain `char`).