langage de programt/ compilation en ligne

http://golang.org/doc/playground.html   gooogle language(go langage)

http://llvm.org/demo/index.cgi

http://clang.llvm.org/         jvascipt to c c++

Emscripten

Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode - which can be generated from C/C++, using llvm-gcc or clang, or any other language that can be converted into LLVM - and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run).