Professionally I write POSIX C, and lately Go. Mostly to make other developers' lives easier, sometimes to make stuff go faster or use less memory.
In my spare time, I use a lot of other tools as well.
8 Exceptions as asserts or as errors? feb 7 '12
3 Local Stack vs Call Stack nov 4 '11
2 How do you assign error codes? feb 7 '12
2 I created a program based on an LGPL project, and I'm not allowed to publish the source code aug 8 '11
0 When do 'static functions' come into use? oct 8 '11