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C Programming

Learn C from zero by watching your code run: variables, loops, functions, pointers, structures and files.

39 interactive modules Certificate
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Data Structures

Arrays, linked lists, stacks, queues, trees, heaps, graphs, searching and sorting — with interactive visualizers.

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Clean, analyse and visualise real data using Python libraries.

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Data Structures

Polynomial Using Linked List in C: Operations Explained for Beginners

Learn how to represent and perform polynomial operations using linked lists in C. This beginner-friendly guide explains polynomial representation, addition, subtraction, multiplication, and evaluation with simple examples and C programs.

A
Ajay Raj Parashar 9 Oct 2026 · 16 min read
Data Structures

Extended Binary Trees Explained Simply: Why We Add "Empty Seats" to a Tree and Where They Help

What is an extended binary tree, and why would anyone add extra nodes to a tree on purpose? A friendly, beginner-level guide with everyday examples: empty seats, a sorted bookshelf, a game of 20 questions, Huffman codes and sorting.

A
Ajay Raj Parashar 9 Oct 2026 · 12 min read
Programming

Recursion in C Explained With the Call Stack: Base Case, Factorial and Fibonacci

Recursion is a function that calls itself. Trace factorial(4) frame by frame on the call stack, learn why every recursive function needs a base case, see why naive Fibonacci is so slow, and find out when a loop is the better choice.

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Ajay Raj Parashar 8 Oct 2026 · 6 min read
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