enum Types { TypeA, TypeC, TypeB, TypeD, TypeE = TypeD }; int main() { int j; Types t = TypeA; Types t2 = TypeB; bool b = true; enum { foo, bla } i; // all handled, don't activate switch (t) { case TypeA: case TypeB: case TypeC: case TypeD: case TypeE: ; } // TypeD must still be added for the outer switch switch (t) { case TypeA: switch (t2) { case TypeD: ; default: ; } break; case TypeB: case TypeE: break; default: ; } // Resolve type for expressions as switch condition switch (b ? t : t2) { case TypeA:; } // Not a named type switch (i) { case bla: ; } // ignore pathological case that doesn't have a compound statement switch (i) case foo: ; }