There's C90. There's also C99. As far as ISO is concerned, each edition of the C standard is made obsolete by its successor, but that doesn't impose any oblig

There's C90. There's also C99. As far as ISO is concerned, each edition of the C standard is made obsolete by its successor, but that doesn't impose any obligation on you or on compiler writers. If you have gcc, you can still use `gcc -std=c90 -pedantic-errors` (or c99, or c11, or ...).