C Track

12 modules · 48 lessons

The language that powers operating systems and embedded devices. Learn memory management from the ground up with manual allocation and pointer manipulation.

C Basics & Memory

Get started with C: variables, types, compilation, and your first look at how memory works under the hood.

Hello, C!Variables & Types The C Memory Model malloc() and free()challenge

Pointers Deep Dive

Master pointer arithmetic, pointer-to-pointer, function pointers, and common pitfalls that lead to bugs.

Pointer Basics Pointer Arithmetic Pointers & Arrays Function Pointerschallenge

Structs & Data Structures

Build custom data types with structs and implement fundamental data structures: linked lists, stacks, and hash tables.

Defining Structs Linked Lists in C Stacks & Queues Hash Tableschallenge

File I/O

Read and write files in C using the standard library. Understand streams, buffering, and binary vs text modes.

Standard I/O Streams Reading Files Writing Files Binary I/Ochallenge

Networking in C

Learn socket programming from scratch: TCP clients and servers, HTTP basics, and building network protocols in C.

Introduction to Sockets Building a TCP Client Building a TCP Server HTTP from Scratchchallenge

Capstone: Key-Value Store

Build a complete in-memory key-value store in C, combining everything you have learned: data structures, file persistence, and a command interface.

Designing the KV Store The Hash Table Core Adding File Persistence Command Interface & Putting It Togetherchallenge

What Your C Code Actually Does

See what your C code is really doing at the machine level. Examine assembly output from the compiler, understand calling conventions, and learn how high-level constructs translate to CPU instructions.

From Source to Binary Function Calls Under the Hood Memory Operations in Assembly Control Flow in Machine Code

Assembly Equivalents of C Patterns

Rewrite common C patterns in raw x86-64 assembly. Build printf, linked lists, file I/O, and a TCP server at the syscall level to truly understand what C abstracts away.

Recreating printf in Assembly Implementing a Linked List in Assembly File I/O at the Syscall Level Building a Simple TCP Server in Assembly

Concurrency in C

Master multithreaded programming with pthreads. Learn thread creation, synchronisation primitives, atomic operations, and build a practical thread pool.

Threads with pthreads Synchronisation Primitiveschallenge Atomic Operations Building a Thread Poolchallenge

Advanced Memory in C

Go beyond malloc: build custom allocators, use memory-mapped I/O, debug memory issues with sanitizers, and implement your own memory allocator from scratch.

Custom Allocatorschallenge Memory-Mapped I/O Debugging Memory Issues Capstone: Build a Memory Allocatorchallenge

Systems Programming in C

Dive into Unix systems programming: signal handling, process management with fork/exec, shared libraries, and build a working Unix shell as a capstone.

Signal Handling Process Managementchallenge Shared Libraries Capstone: Build a Unix Shell

Security-Focused C

Learn to write secure C code: CERT C guidelines, defensive programming, compiler hardening flags, and harden a deliberately vulnerable server as a capstone.

Secure Coding in Cchallenge Defensive Programming Hardening C Programs Capstone: Harden a Vulnerable Server