Calculator
A four-function calculator that reads expressions and handles bad input gracefully.
60 C++ Projects
Every project includes a full walkthrough, starter code, exact compile commands and a sample run. Browser demos, where present, are browser re-implementations of the same logic — not the compiled C++ programs.
Beginner projects (20)
Number Guessing Game
The computer picks a secret number; you hunt it down with higher/lower hints.
Digital Clock
A live console clock that redraws itself every second.
Tic-Tac-Toe
Two players, one 3×3 grid — the first project on the Tic-Tac-Toe path.
Unit Converter
Convert length, weight, and temperature between metric and imperial units.
To-Do List App
Add, list, complete, and delete tasks — saved to a file so they survive restarts.
BMI Calculator
Compute Body Mass Index from height and weight, with a health category.
Student Grade System
Record scores for a class, compute averages, and assign letter grades.
Currency Converter
Convert between world currencies using a built-in table of exchange rates.
Rock Paper Scissors Game
Face the computer in the classic hand game, with a running score.
Calendar Generator
Print a correctly aligned calendar for any month and year.
Age Calculator
Enter a birth date and get an exact age in years, months, and days.
Password Strength Checker
Type a password and get an instant strength rating with reasons.
Quiz Game
A multiple-choice quiz that asks questions, checks answers, and grades you.
Temperature Logger
Record daily temperatures to a file and report trends and extremes.
File Encryptor/Decryptor
Scramble any file with a key so it can't be read — then unscramble it.
Stopwatch
Start, stop, lap, and reset — precise timing down to milliseconds.
ATM Simulation
PIN login, balance checks, deposits, and withdrawals with safety limits.
Leap Year Checker
The deceptively tricky rules for whether a year has 366 days.
Prime Number Finder
Test numbers for primality and generate every prime up to a limit.
Intermediate projects (20)
Contact Management
A digital address book with add, search, edit, delete — and real persistence.
Bank Management System
Multiple account types, deposits, transfers, and interest — a mini banking core.
Simple Chat App (Console)
Two terminals on one network, sending messages to each other in real time.
Library Management System
Track books, members, loans, and overdue fines like a real small library.
Expense Tracker
Log spending by category and see where the money actually goes.
Snake Game
The legendary snake: eat, grow, and don't bite yourself.
Hangman Game
Guess the hidden word letter by letter before the drawing completes.
Simple Voting System
Register voters, cast one ballot each, and tally a tamper-resistant result.
Address Book
A searchable, sortable directory of people and their details.
Inventory Management
Track stock levels, flag low items, and value the whole warehouse.
Sudoku Solver
Feed it any Sudoku puzzle; backtracking finds the solution in milliseconds.
Railway Reservation System
Book train seats, manage waitlists, and cancel with automatic promotion.
File Compression Tool
Shrink text files with a real Huffman encoder — and restore them losslessly.
Parking Lot Management
Check vehicles in and out, assign spots, and bill by the hour.
Mini Shell
Your own tiny command shell: run programs, chain them with pipes.
Chess Clock
Two countdown clocks, one button — flag fall decides the game.
Tic-Tac-Toe with AI
The beginner board grows a brain: an AI that can never lose.
Music Playlist Manager
Build playlists on a hand-rolled linked list: next, previous, shuffle, repeat.
Resume Builder (text-based)
Answer questions, get a cleanly formatted resume as a text file.
Budget Calculator
Split a monthly income across needs, wants, and savings — and see the gaps.
Advanced projects (20)
Text Editor
A real terminal editor: open files, type, move, search, save — like kilo or nano.
Web Crawler
Start from one page, follow every link, and map a slice of the web.
Multiplayer Tic-Tac-Toe
The Tic-Tac-Toe path finale: two players, two computers, one network.
mini Compiler for C++
Compile a tiny language of your own design: source in, meaning out.
Memory Management
Write your own allocator: a pool that hands out memory and takes it back.
File Search Engine
Index every text file in a folder, then search it like Google — instantly.
Graph Visualizer using STL
Build graphs, run BFS/DFS/Dijkstra, and watch traversals step by step.
E-commerce Backend
Products, carts, orders, and payments — the engine behind an online shop.
Game Engine (Basic 2D)
A small 2D engine: sprites, input, physics, collision — then a game on top.
Network Packet Sniffer
Capture live traffic and decode Ethernet, IP, and TCP headers by hand.
Chat Application TCP/UDP
A multi-user chat server with rooms — built on TCP, compared with UDP.
Image Editor (CLI version)
Load a PPM image and apply real filters: greyscale, blur, edge detection.
Bank Loan Approval System
Score loan applications against layered rules — and explain every decision.
Code Auto-formatter
Feed it messy C++ and get consistently indented, styled code back.
Hospital Management
Patients, doctors, appointments, and an emergency queue that jumps the line.
Credit Card Fraud Detection
Scan transaction streams and flag the ones that smell wrong — with reasons.
Student Portal System
Logins, roles, grades, and courses — the system behind a school portal.
Virtual File System
A filesystem inside a file: directories, files, and blocks you manage yourself.
Compiler Analyzer
Go beyond parsing: catch undeclared variables and type errors like a real compiler.
GUI-based Inventory
The inventory system grows a window: tables, forms, and live search.