🔵 Core C++ · Lesson 29

Enumerations in C++

What is Enumerations in C++?

Enumerations in C++
An enum defines a set of named integer constants. It improves readability when a variable can have limited fixed choices.

Level
🔵 Core C++ Features

Example File
enums.cpp

Main Focus
Concept + syntax + practical C++ program

Why should you learn this?

It helps you write correct and readable C++ programs.
It is used repeatedly in school practicals, projects and competitive programming.
It builds the base for advanced topics such as OOP, STL and data structures.

Important Terms

Term	Meaning / Use
enum	Enumerations in C++ programming में Enum use होता है।
enum class	Enumerations in C++ programming में Enum class use होता है।
constant	Enumerations in C++ programming में Constant use होता है।
state	Enumerations in C++ programming में State use होता है।
readability	Enumerations in C++ programming में Readability use होता है।

Syntax / Pattern

C++

enum Day {Mon, Tue, Wed};

Example Program

main.cpp

#include <iostream>
using namespace std;
enum Result { FAIL, PASS, MERIT };
int main(){
    Result r = MERIT;
    cout << r;
    return 0;
}

Expected Output

Program Explanation

Enum values start from 0 by default.
MERIT is the third value, so it prints 2.

Exam Tip: In C++ practical answers, write the logic first, then the program, then expected output. For theory, always include one suitable example.

Where will you use it?

status values
menu states
days/months

Common Mistakes

Using plain enum names that conflict.
Expecting enum to store strings.

Practice Tasks

Create enum for traffic lights.
Use enum in switch-case.

Summary

Enumerations in C++ एक ज़रूरी C++ topic है। परिभाषा सीखें, syntax समझें, example program चलाएं और फिर practice tasks हल करके concept मज़बूत करें।