#include <iostream>

using namespace std;

/*

Enum is a user-defined data type that consists of integral constants (unchangeable values).

Syntax: enum name {constant1, constant2, ... };

Example: enum Level {LOW, Medium, HIGH}; Level => Enumerate Type, LOW,MEDIUM,HIGH => Values of Level

By default first value is 0, second value is 1, and so on.

The default values can be changed. Example: enum Level {LOW = 25, HIGH = 50};

Why are enums used?

An enum variable takes only one value out of many possible integer values (Second example).

This makes enum a good choice to work with flags.

*/

//Declaration: (First examples)

enum Week {Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday}; //0,1,2,3,...

enum Level {LOW = 15, MEDIUM = 25, HIGH = 35};

//Second example

enum suit {

//Must be integers

club = 0,

diamonds = 10,

hearts = 20,

spades = 3

} card;

int main(){

Week today;

today = Wednesday;

cout << today << endl;

enum Level lvl = MEDIUM;

switch(lvl) {

case 15:

cout << "Low level";

break;

case 25:

cout << "Medium level";

break;

case 35:

cout << "High level";

break;

}

//Second example

card = club;

cout << "\nSize of enum variable: " << sizeof(card) << " bytes.";

}