My first C project was on a microcontroller (ATMega architecture/AVR-GCC) 12 years ago. I think a lot of people get in contact with C with Arduino these days.

My first C project was on a microcontroller (ATMega architecture/AVR-GCC) 12 years ago. I think a lot of people get in contact with C with Arduino these days. My first real C project on x86 was a graphical user interface with Gtk+. However, I soon switched to C++ using Gtkmm, then using Qt.