how to run c,c++,java,php,ruby,phyton source codes without using any software

In many company and many students use c,c++ and more languages in computer to create softwares excently but  every time we not assure this programs works 100 % perfectly in that time what we can do when corrupt or software damaged?..maxicsolutions.In every problem occurs every solution .how to we can check the program works correctly.use the source code.But one solutions available you need  only internet to run this code..in Internet codepad and some sites has provide to run source codes..

Click Here to go that site  In site has provide to run the following languages C,C++,D,Hasekell,Lua,Ocaml,PHP,Pearl,Plain text,Phyton,Ruby,Scheme,TCl  

Click Here to go that site  In site has provide to run the following languages   Java,Html,JQuery,VB.net,etc..    

Click Here to go that site  In site has provide to run the following languages HTML,asp.net,SQL,etc