Just found this: SourceLair is an online IDE for quick coding in several languages including C, C++, Objective-C, Java, Fortran 90/95, Pascal, Python, Ruby, Lua, HTML, CSS, Javascript, PHP and SQL:
sourceLair is a web application that includes every feature that a programmer might need. sourceLair has been designed to make coding platform-free, robust, easy and a lot more fun.
The compilation of these 8 lines of C code took around 15 seconds…