> " (Thompson had made a brief attempt to produce a system coded in an early version of C—before structures—in 1972, but gave up the effort.)"
Yes, but that is the key bit right, the fact that C didn't have structures yet is what caused the effort to be aborted, and once those were added they succeeded.
> Original C was created after UNIX already existed, used for UNIX's first rewrite and until UNIX source code left Bell Labs, it only worked on PDP-11 computers.
Regardless of failed porting effort, the original UNIX, implemented in Assembly and running on the PDP-7, was already being used by a small community.
