How to check if an enum variable is valid?

Question

I have an enum:

enum myenum{
  typeA,
  typeB,
  typeC
} myenum_t;

Then, a functions is to be called with an enum parameter:

Answer 1

Can't you also do something like

enum myEnum {typeA,typeB, typeC};

int myFunction (myEnum arg1) {
    if (arg1 >= typeA && arg1 <= typeC) {
        // do work here
    } else {
        printf("invalid argument!");
    }
    return 0;
}