C-Workshop at Hackers Awake

The lecture material:

Slides (PDF)
Hello, World
Hello, you
Hello, you with name hashing

Compile the programs using the following command:


   % gcc -W -Wall -Os -o hello -g hello.c

-Wall: Enable most warnings
-W: Enable all warnings that are not enabled by -Wall
-Os: Optimize for size
-o hello: Output to program name «hello»
-g: Enable debug symbols (so you can use gdb)

Other people recommend -ggdb3 and -O0 instead, those are actually more useful for debugging on gcc4.