Enumeration data type is a user-defined data type in C++. enum keyword is used to declare a new enumeration types in C++.

Syntax

enum name{constant1, constant2, constant3, ....... } var-list;

Example

#include <iostream>
using namespace std;


enum month{January, February, March, April, May, June, July, August, September, October, November, December} name;

int main() 
{
  name = June; 
  cout << name; 
  return 0; 
}

Run here