CS208 Introduction to Computer Systems
Friday, 6 Jan 2023

+ Today
- Questions
- Bits, bytes
- Integers in base 2 (binary), 8 (octal),
    10 (decimal), and 16 (hexadecimal)
- char arrays, strings, and the wild
    proliferation of array notations in C
- pointers, *, &

+ Questions [N minutes]
- "Starting C" assignment
- C in general
- Anything else

+ Integer notations [10-12 minutes]
- Binary: relation to physical devices, computational benefits, 0b notation
- Octal: 3-bit chunks, 0 notation, %o
- Hexadecimal: 4-bit chunks, 0x notation, as seen in RGB color representation, %x, %X
- bits, bytes, words
- od (Unix command)
- hexdump (Unix command)

+ Memory
- Big box o' bytes with addresses
- What's a byte?

+ C strings [10-15 minutes]
- strings.c
- * vs. []
- const

+ Addresses ("pointers") in C
- pointers.c
- &: the "address-of" operator
- * in declarations: "a pointer to"
- * applied to a pointer: "value at this address"
- Array names are pointers. (That doesn't seem fair.)

+ Getting ready for the queues assignment
- This course & the textbook's authors
- Getting started on this assignment
    - Start with stubs
    - Using the makefile to test your code
    - Iterative development
    - Why this assignment in particular?
- make and Makefile