Question

Relational Operators

For Cpp

Discuss why relational operators can be used with enumeration types. Provide at least 2 examples of relational expressions with enumeration types. Explain your examples

Answer 1

The syntax for enumeration is:
enum typeName {value1, value2,…}, in which value1, value2, . . . are identifiers called enumerators. In C11, enum is a reserved word. By listing all of the values between the braces, you also specify an ordering between the values. That is, value1 < value2 < value3 <.... Thus, the enumeration type is an ordered set of values. Moreover, the default value assigned to these enumerators starts at 0. That is, the default value assigned to value1 is 0, the default value assigned to value2 is 1, and so on. (You can assign different values—other than the default values—for the enumerators when you define the enumeration type.) Also notice that the enumerators value1, value2, . . . are not variables.
The statement:
enum colors {BROWN, BLUE, RED, GREEN, YELLOW};
defines a new data type called colors, and the values belonging to this data type are BROWN, BLUE, RED, GREEN, and YELLOW.