Enumeration c++

Enumeration in C plus plus is a data type that contains fixed set of constants.

It can be used for days of the week (SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY and SATURDAY) , directions (NORTH, SOUTH, EAST and WEST) etc. The C++ enum constants are static and final implicitly.

C++ Enums can be thought of as classes that have fixed set of constants.


Points to remember for C++ Enumeration

  • enum improves type safety
  • enum can be easily used in switch
  • enum can be traversed
  • enum can have fields, constructors and methods
  • enum may implement many interfaces but cannot extend any class because it internally extends Enum class

 

C++ Enumeration Example

Let’s see the simple example of enum data type used in C++ program.

 
  • #include <iostream>  
  • using namespace std;  
  • enum week { Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday };  
  • int main()  
  • {  
  •     week day;  
  •     day = Friday;  
  •     cout << “Day: “ << day+1<<endl;  
  •     return 0;  
  • }     

Output:

Day: 5