C++ Tutorial - Complete Guide from Basics to Advanced with Practice

C++ is one of the most powerful and widely used programming languages in the world. From operating systems and game engines to competitive programming and high-frequency trading systems, C++ is everywhere performance matters. If you are a college student preparing for placements, competitive programming, or system-level development, C++ is essential.

This guide takes you from writing your first Hello World to mastering advanced topics like STL, memory management, templates, and competitive programming patterns. Every chapter includes detailed explanations of what each concept is and why it matters, followed by real code you can compile and run.

Each chapter has 50+ practice questions ranging from easy warm-ups to hard interview-level problems. By the end of this guide, you will be confident writing efficient C++ code for any purpose.

25 Chapters 1403+ Questions Free

Chapters

Introduction to C++

Learn what C++ is, its history, where it is used, and how it compares to other languages like Java and Python.

Setting Up C++ and Your First Program

Install a C++ compiler, set up an IDE, and write your first program with cout, cin, and the main function.

Variables, Data Types, and Type Casting

Understand int, float, double, char, bool, sizeof, type casting, auto keyword, and constants.

Operators in C++

Master arithmetic, relational, logical, bitwise, assignment, and ternary operators with precedence rules.

Input, Output, and Formatting

Use cin, cout, getline, setw, setprecision, fixed, and learn about buffer flushing and input validation.

Conditional Statements (if, else, switch)

Make decisions with if-else, nested conditions, ternary operator, and switch-case statements.

Loops (for, while, do-while) and Patterns

Master all loop types, nested loops, break/continue, and build star, number, and character patterns.

Functions, Overloading, and Recursion

Define functions, understand pass-by-value vs pass-by-reference, function overloading, default arguments, and recursion.

Arrays and Multidimensional Arrays

Work with 1D and 2D arrays, array operations, passing arrays to functions, and common array algorithms.

Strings - C-style and std::string

Master C-strings, std::string methods, string manipulation, comparison, and common string algorithms.

Pointers and References

Understand memory addresses, pointer arithmetic, references, pointer to pointer, and common pitfalls.

Dynamic Memory Allocation (new, delete)

Allocate memory at runtime with new/delete, dynamic arrays, memory leaks, and smart pointers introduction.

OOP - Classes, Objects, and Constructors

Create classes with data members, member functions, constructors, destructors, this pointer, and static members.

Encapsulation, Access Specifiers, and Friend Functions

Use public, private, protected access, getters/setters, friend functions, and friend classes.

Inheritance in C++

Implement single, multiple, multilevel, and hierarchical inheritance with access control and constructor chaining.

Polymorphism - Virtual Functions and Operator Overloading

Master compile-time (overloading) and runtime (virtual functions, vtable) polymorphism and operator overloading.

Abstract Classes, Pure Virtual Functions, and Interfaces

Design with abstract classes, pure virtual functions, and interface patterns in C++.

Templates - Function and Class Templates

Write generic code with function templates, class templates, template specialization, and variadic templates.

Exception Handling (try, catch, throw)

Handle errors with try-catch, throw, custom exceptions, exception hierarchy, and noexcept.

STL Containers - vector, list, map, set, stack, queue

Master the Standard Template Library containers with their methods, time complexities, and use cases.

STL Algorithms and Iterators

Use sort, find, binary_search, accumulate, transform, and iterators to write efficient C++ code.

File Handling (ifstream, ofstream, fstream)

Read and write files, handle binary files, and implement file-based data storage.

Smart Pointers and Modern Memory Management

Use unique_ptr, shared_ptr, weak_ptr, RAII principle, and avoid memory leaks in modern C++.

Competitive Programming Patterns in C++

Fast I/O, common CP patterns, two pointers, sliding window, prefix sums, and optimization techniques.

Modern C++ Features (C++11 to C++20)

Lambda expressions, auto, range-based for, move semantics, constexpr, structured bindings, and concepts.

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