CS208 Introduction to Computer Systems
Friday, 13 Jan 2023

+ Recap
- C basics
    - types, conditionals, loops, functions
    - header files
    - function prototypes
    - printf, including %s, %c, %d, %x, %lx
    - struct
- C memory handling
    - static variables (local variables, stored on system stack)
    - dynamically allocated memory (malloc, free, the heap)
    - arrays ("char s[20]" vs. "char *s = malloc(20)")
- C extras
    - 2d arrays, passed as parameters
- Data representation: characters & character encodings
- Data representation: integers
- Byte order (a.k.a. "endian-ness"); big- and little-endian
    storage of integers

+ Homework through Jan 22
- Programming assignment: shoutify & sorter [done]
- Programming assignment: queues / memory management [Jan 16]
- Quiz about data representation [Jan 18, take as many times as you want]
- Programming assignment: bit operations and UTF-8 [Jan 22]

+ Coming up
- Negative integers and real/floating-point numbers (today)
- Debugging C programs
- Machine language and assembly language
- Reading assembly language and reverse-engineering what
    an executable program is doing
- Monday, Jan 30: in-class exam
    - data representation
    - C basics
    - C memory management
    - a little bit of assembly language

+ Questions
- queues assignment
- anything else

+ Two's complement integer representation

+ Have a great weekend!