What is a scoped enum?

Scoped enums (enum class/struct) are strongly typed enumerations introduced in C++11. They address several shortcomings of the old C-style (C++98) enums, mainly associated with type-safety and name collisions.

What is typedef enum?

The typedef keyword allows us to rename a data type to a name that has more meaning to our program. The typedef statement may be specified by itself or as part of a enum or struct definition. The typedef defined new name is often the given the same name as the enum or struct definition.

What is Java enum?

A Java Enum is a special Java type used to define collections of constants. More precisely, a Java enum type is a special kind of Java class. An enum can contain constants, methods etc. Java enums were added in Java 5.

What is C++ enum?

Enumeration is a user defined datatype in C/C++ language. It is used to assign names to the integral constants which makes a program easy to read and maintain. The keyword “enum” is used to declare an enumeration. const1, const2 − These are values of type flag.

What is difference between typedef and enum?

Note: Using typedef is not common in C++, because enum defines a type name automatically. The construct is more common in C, where enum without typedef must be used only as a tag, i.e. with enum keyword.

Can enum be null Java?

An enum can be null. When an enum (like Color in this program) is a field of a class, it is by default set to null. It is not initialized to a value in the enum. It has no value.

What is enum in programming languages?

In computer programming, an enumerated type (also called enumeration, enum, or factor in the R programming language, and a categorical variable in statistics) is a data type consisting of a set of named values called elements, members, enumeral, or enumerators of the type.

What is the difference between enum struct and enum class?

Like a class, a struct can have member functions and template parameters and so on. One of the vital difference between structs and enums is that an enum doesn’t exist at run-time. It’s only for your benefit when you’re read/writing the code.