Here are some great websites for compiling and executing your code onlineIDEOneCodePadCompile-OnlineJDoodle
IDEOne
Ideone is an online compiler and debugging tool which allows you to compile source code and execute it online in more than 60 programming languages. These include C, C++, C#, Objective C, Java, Pascal, Perl, PHP, Ada, COBOL, FORTRAN, Bash(Bash is a shell used in Linux) etc.’
CodePad
codepad.org is an online compiler/interpreter, and a simple collaboration tool. It’s a pastebin that executes code for you. You paste your code, and codepad runs it and gives you a short URL you can use to share it. Paste the URL into chat or email to get help or to show someone how to do something. Or just try things out when you don’t have an interpreter handy. It works well on many phones. The languages supported include C, C++, Perl, PHP, Python etc.
Compile-Online
It is another great online IDE with support for almost every well known programming language.
JDoodle
“Online compiler and Editor for Java, C, C++, Perl, PHP, Python and More…”
With these sites you will just need an internet connection to run your code and you can avoid all issues which are invoked after installation of compiler or interpreter software. If a website which deserves a place in this list and has been missed by us, let us know in the comments.