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Learn C Programming
in 5 Days

Master C: pointers, memory management, structs, file I/O, and systems programming patterns.

5 lessons
Self-paced
~60 min/day
Free forever
No account needed
Start Day 1 — Free → See what's covered
What you'll learn

C Programming in 5 Days

Free 5-day C programming course. Pointers, memory management, structs, file I/O, and real systems programming.

  • Master pointers: declaration, dereferencing, pointer arithmetic, and common errors
  • Manage memory manually: malloc, calloc, realloc, free, and avoiding leaks
  • Define and use structs, unions, and function pointers for flexible data structures
  • Read and write files with fopen/fread/fwrite and handle errors correctly
  • Write real systems programs: a command-line tool, a simple HTTP parser, signal handlers
Pointers
mastered
malloc
manual memory
Systems
programming
$0
cost
5-Day Curriculum

Every lesson builds on the last.
No theory without practice.

01
Pointers
Pointer types, dereferencing, arithmetic, arrays and pointers
pointersdereferencepointer arithmeticvoid*
→
02
Memory Management
malloc/free, stack vs heap, valgrind, memory leaks
mallocfreevalgrindheap
→
03
Structs and Functions
Structs, unions, function pointers, typedef, typedef struct
structunionfunction pointertypedef
→
04
File I/O
fopen, fread, fwrite, fseek, error handling, binary files
fopenfreadfwriteerrno
→
05
Systems Programming
Signals, processes, pipes, command-line parsing, getopt
signalforkpipegetopt
→
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Your instructor
B
Bo Peng
Founder, Precision AI Academy

Kaggle Top 200 data scientist. Trained 400+ professionals across universities and federal agencies. Built production systems at scale. Every lesson has concrete examples and exercises you can finish in under an hour.

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