Why unsigned chars not default?

[Doug Gwyn]

In article <9563 at pur-ee.UUCP> mendozag at ee.ecn.purdue.edu (Victor M Grado) writes:
-   He claims the compilers are at fault and that all the compilers
- should have 'unsigned char' as default for characters so you
- can do all sorts of arithmetic with them.
- Any comments and/or suggestions I can pass along?

Perhaps you could tell him to learn C instead of guessing about it.