C++ Online Tutorials

May 9, 2025

Learn C++

C++ language is very important for placements and a lot of questions will be asked from theory concepts in Online tests of various companies and also interviews. The pages below can also be used for general C++ learning and will cover all important topics for C++.

Introduction

Here we will learn about the structure of C++ language and the syntax in order to construct a feasible code. These are important topics and you need to be thorough in these topics before you move further.

C++ vs C

Here we will learn about basic difference between C++ and C

1. Programming Paradigm:

C is a procedural programming language, which follows a top-down approach and focuses on functions and procedures.
C++ is a multi-paradigm language that supports both procedural and object-oriented programming (OOP), allowing concepts like classes, inheritance, and polymorphism.

2. Code Reusability:

In C, code reusability is limited and achieved using functions.
In C++, object-oriented features like classes and inheritance promote better code reusability and modularity.

Input/Output

Here we will learn about how input/output work in c++ and different type conversion

Operators and variables

Here we will learn about different types of operators and variables used in C++

Conditional statement

Here we will learn about how input/output work in c++ and different type conversion

Array and String

Here we will learn about what array , string are and how they work in C++ Programming.

Function

Here we will learn about what Function and how they are used in C++ Programming.

Structures in c++

Here we will learn about what Structures and how they are used in C++ Programming.

Pointers

Here we will learn about what Pointers and how they are used in C++ Programming.

Object and class in c++

Here we will learn about what Oject , Class and how they are used in C++ Programming.

STL in C++

Here we will learn about what STL and how they are used in C++ Programming.

Containers in STL

Here we will learn about what Container in STL and how they are used in C++ Programming.

Math in STL

Here we will learn about how math is used in STL C++ Programming.

Exception Handling

Here we will learn about Exception Handling and how they are used in C++ Programming.

Library in C++

Here we will learn about Library in C++ and how they used in C++ Programming.

Introduction to Classes and OOPs Concept

In C++, Object-Oriented Programming (OOP) is a way of writing code by creating objects that represent real-world things. These objects are made using classes.

What is a Class?

A class is like a blueprint or template. It defines how an object will look and what it can do. It contains data (called variables) and functions (called methods) that work on that data.

What is an Object?

An object is created from a class. It is a real thing you can use in your program.

Basic OOPS Concepts in C++

Encapsulation – Wrapping data and functions together inside a class. It hides the internal details.
Inheritance – A class can use features of another class. Example: ElectricCar can inherit from Car.
Polymorphism – One function behaves differently based on how it’s used. Helps with flexibility.
Abstraction – Showing only the important details and hiding the rest.