Outline:

1. Numerical ops: bitmasks
2. Representing data
   • recap: binary/hexadecimal
   • ASCII
3. Character encodings
   • codepoints vs encodings
   • Unicode and UTF-8
4. Assignment 2: Bits and Character Encodings - due next Wednesday

Look at after class (DM on Slack or visit Student Hours with questions!):

5. Programming in C
   • char arrays: char.c
   • handling command-line arguments: args.c
6. Practice encoding and decoding UTF-8: Jeff’s cool site

Reminder: first quiz Monday

You will see these Quiz Learning Objectives:

• NR 1: binary
• NR 2: hexadecimal
• OP 1: bitwise/logical/shift
• OP 2: resizing

The quiz may also have DR 1 or DR 2 if there is an extra side of a page. I recommend prioritizing answering a few questions really well over doing poorly on all of them.

Reading assignment (to be completed by the next class):

What we talked about today:

• An Introduction to Character Encodings by Ravi Suresh Mashru
• Wikipedia page on UTF-8

For next time:

• DiS Sec. 1.6: Structs