Exactly, thank you. I've always called "tag" the id that optionally follows struct/union/enum. Is it the wrong word? Some specs call it "name", but "unnamed un

Exactly, thank you. I've always called "tag" the id that optionally follows struct/union/enum. Is it the wrong word? Some specs call it "name", but "unnamed union" sounds dangerously similar to "anonymous union", which is a different concept, namely (no pun!) an unnamed member of an outer struct or union whose submembers can be accessed as if they belong in the outer one. E.g. struct { struct { int m; }; // no name: anonymous struct s; s.m = 1;