If the enumeration and the variable have already been defined:
Syntax
varName = labeln;
Use the labels just like any other symbolic constant.
Enumeration type variables must only use the type’s labels or equivalent integer.
Code example
enum color {red, green, blue};
enum color myCar;
myCar = red;
myCar = 3;
if (myCar == 2) {
// do something
}