Lecture 23: November 18, 2019

1. Greetings and felicitations!
   1. No office hour on Friday; an office hour on Tuesday 11am–11:50am
2. Binary arithmetic; cover addition
3. Hexadecimal notation (base 16 numbers)
4. Bit operations: and (&), or (|), xor (^), not (~)
5. How computers represent numbers and characters
6. Getting to bits (and debugging using gdb)
   1. How to extract bits
   2. Debug program: forget to make bits printable [bits1.c]
   3. Debug program: get bits but in wrong order [bits2.c]
   4. Got it [bits3.c]

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 36A, Programming and Problem Solving Version of November 18, 2019 at 7:43PM

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