Programming is definitely not for everybody, but sites such as Ideone turn it into an endeavor that is (slightly) more accessible. You see, though the site anybody can paste a string of code he is working on and watch it being executed in front of his eyes.
Moreover, the whole process can be as public or private as the user wishes. That is, if you are going to test the code of that secret project you have been working in day in and out for the last couple of years you will obviously want to set that to private. But if you are testing out the code of an application of which there are ten-a-penny you might as well keep it all public so that others can learn from your mistakes.
In addition to that, the site includes a section that is wholly devoted to samples. Useful for improving you understanding of any of the featured languages in a focused way. There are more than 30 languages included, as a matter of fact – COBOL, Fortran, Ruby, Pascal, C++… the list is a long one, and you are bound to find something to work with here for certain.
Ideone.com In Their Own Words
“Choose language, paste code and input data (optionally), choose whether your code ought to be executed and whether it ought to be private (i.e. not listed in recent pastes) and click submit button. Then watch your code being executed, share it with your team or friends, or run it again with new input to debug.”
Why Ideone.com It Might Be A Killer
Programmers are going to relish having so many languages supported and situated side by side.
Some Questions About Ideone.com
Which languages are yet to be added? 
