Day 016 The Type System Bites
Chapter 2 opens and the type system immediately starts lying to you.
Knr
Day 015 The Chapter 1 Test
Testing everything from Chapter 1. Feynman gauntlet, code tracing, security connections, and closing gaps I did not know I had.
Day 014 The Parser's Dilemma
Finishing Chapter 1 with the two hardest exercises. Comment stripping, bracket matching, and why parsers that don't understand context create entire vulnerability classes.
Day 013 Lucky Number
K&R exercises 1-20 through 1-22. Tab expansion, tab compression, line folding. A bug that hid in plain sight.
Day 012 Two Counters
Exercises 1-16 through 1-18. Dual counters, GDB investigations, and what happens when zero means two things.
Day 009: Shortcut Tax Repaid
Rebuilding ten exercises from scratch on a different machine. No peeking. No shortcuts. Proof of ownership.
Day 007 Earning It Clean
Rebuilding exercise 1-10 from scratch, word counting with state machines, and threat modeling a 20-line program.