surprising semantics of the && expression

[Derek Fawcus]

> K+R C did not have a void type.

It did, added around Nov '78 (or latest Jul 82).

It is just that they never reprinted the book to account for 
void, enums and struct assignment/pass/return being added. If one 
grabs some of the historical sources, one can see said support.

 From DMR's home page:

'However, it turns out that the paper copies of the 7th Edition 
manual that we printed locally include not only what became 
Appendix A of K&R 1, but also a page entitled "Recent Changes to 
C", and I retyped this.'

I recall reading this in the papers section at the end of the 
Unix manuals for the system I had access to.

https://www.nokia.com/bell-labs/about/dennis-m-ritchie/cchanges.pdf

The page above doesn't specifically mention void, but one can see 
it in the historical PCC sources if one grabs them (file dates 
between Jun 81 and Jul 82). Bitsavers has a cooy somewhere, as 
they were used to build the PC-TCP stack.