Outline:

1. Recap: C string functions
   • questions from the lab?
   • example: strings.c
2. Program memory
   • sizeof
   • example: sizes.c (includes typedef example)
   • memory organization
   • allocating stack and heap memory
3. Pointers
   • variable addresses
     • * versus &
     • arrays and pointers
   • example: pointers.c
4. Assignment 3: String Things
   • data store: practice with structs and char arrays
   • string splitter: use strtok – see documentation for an example

Want additional practice?

Check out the interactive exercises from the textbook!

Reminder: next quiz Monday

You will see these Quiz Learning Objectives:

• DR 1: UTF-8 encoding
• DR 2: UTF-8 decoding
• DR 3: struct layout
• DR 4: array layout
• DR 5: C strings

There likely won’t be any additional questions, but my first choice would probably be NR 1 or NR 2 if it ends up faster/shorter than I expect.

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

What we talked about today:

• DiS Sec. 2.1: Parts of Program Memory and Scope
• DiS Sec. 2.2: C Pointer Variables
• Binky Pointer Fun Video C (video by Nick Parlante)
• Pointer basics (Stanford)
• Take a look at The 5-Minute Guide to C Pointers by Dennis Kubes. If you don’t read this now, return to it in a few days. Some of it won’t make sense until later this term, but it’s still valuable.

Reviewing more in-depth:

• DiS Sec. 2.5: Arrays in C
• DiS Sec. 2.6: Strings and the String Library

For next time:

• Assignment 3: String Things – read the assignment description and try to run the starter code!
• DiS Sec. 2.3: Pointers and Functions
• DiS Sec. 2.4: Dynamic Memory Allocation