Enumerations in C++

Enumerations in C++ (enum)
An enumeration (enum) is a user-defined data type that assigns names to integer constants, making programs more readable and structured. An enum is a symbolic name for a set of integer values.

Syntax
enum EnumName {
    constant1,
    constant2,
    constant3
};

Example
#include <iostream>
using namespace std;
enum Day { Sun, Mon, Tue, Wed, Thu, Fri, Sat };
int main() {
    Day today = Wed;
    cout << today;   // Output: 3
}

Assigning Custom Values
enum Status {
    Success = 1,
    Error = 5,
    Pending = 10
};
You can also mix:
enum Numbers { A = 10, B, C };  
// B = 11, C = 12

Size of Enum

• Usually same as int (4 bytes)
• Depends on compiler

Enum Example with Switch

#include <iostream>

using namespace std;

enum Color { Red, Green, Blue };

int main() {

    Color c = Green;

    switch(c) {

        case Red: cout << "Red"; break;

        case Green: cout << "Green"; break;

        case Blue: cout << "Blue"; break;

    }

}

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