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Guides & Cheat Sheets

Programming Tutorials

Learn essential programming concepts and practice them directly in our browser compiler.

C Programming for Beginners

  • Data types and variables
  • Pointers & memory addresses
  • Standard I/O with printf and scanf
  • Dynamic memory (malloc/free)
Read C Guide & Practice

Modern C++ and the STL

  • std::vector, std::map, and std::set
  • Smart pointers and RAII
  • Lambda expressions and auto
  • Competitive programming speed tricks
Read C++ Guide & Practice

Python 3 Quick Start

  • Lists, tuples, dictionaries, sets
  • List and dict comprehensions
  • Functions and *args/**kwargs
  • Error handling with try/except
Read Python Guide & Practice

Java Object-Oriented Fundamentals

  • Classes, objects, and constructors
  • Encapsulation, inheritance, polymorphism
  • Collections framework (ArrayList, HashMap)
  • Exception handling
Read Java Guide & Practice

Node.js JavaScript Fundamentals

  • Async/await and Promises
  • Array methods (map, filter, reduce)
  • Reading stdin in Node.js
  • JSON serialization
Read JavaScript Guide & Practice