Question

Which are valid identifier and which are invalid identifiers?
(a) MyClass
(b) myClass
(c) My Class
(d) My class
(e) class
(f) Class
(g) 1st Student
(h) 2nd
(i) delta123
(j) si
(k) S.I
(l) C.P.
(m) SI
(n) PI
(o) pie
(p) Simple_Interest
(q) Simple_interest
(r) int
(s) Switch
(t) switch​

Answer 1

Answer:

all of the above.

I think