C

Lessons

1. 1

   Why C in 2026

   Free

   Explain where C is still used (kernels, embedded, runtimes, perf-critical code) and what C teaches about computers.

   Beginner·35 min
2. 2

   C Dev Environment Setup

   Install GCC / clang and configure VS Code for C development.

   Beginner·30 min
3. 3

   C Fundamentals

   Use C data types, variables, operators, control flow, functions, and exit codes.

   Beginner·45 min
4. 4

   Arrays and Strings

   Understand arrays in memory, null-terminated strings, why buffer overflows happen.

   Intermediate·50 min
5. 5

   Pointers

   Use pointers, pointer arithmetic, function pointers, pass-by-reference.

   Intermediate·55 min
6. 6

   Memory Management

   Use malloc/calloc/realloc/free correctly; detect leaks with Valgrind + AddressSanitizer.

   Advanced·60 min
7. 7

   Structs and Unions

   Define structs, typedef, nested structs, and use unions where appropriate.

   Intermediate·40 min
8. 8

   File I/O

   Use fopen, fread, fwrite, fclose, fprintf, fscanf, and binary files.

   Intermediate·40 min
9. 9

   The C Standard Library

   Know what stdio, stdlib, string, math, time provide so you don't reinvent.

   Intermediate·40 min
10. 10

    Compilation and Linking

    Trace preprocessing → compilation → linking and write Makefiles.

    Intermediate·50 min
11. 11

    C and Security

    Recognize buffer overflows, format string bugs, use-after-free; reach for safer functions.

    Advanced·50 min
12. 12

    Intro to Systems Programming

    Use system calls, file descriptors, fork/exec/wait, and signals, the OS layer every server and shell is built on.

    Advanced·50 min
13. 13

    Passion Project: C CLI Tool

    Build a nontrivial CLI tool in C with correct memory management; warning-clean + ASan-clean.

    Advanced·240 min
14. 14

    C Job Readiness

    Translate C skills into resume bullets + interview answers for embedded / systems / security roles.

    Beginner·30 min