If you are a moving programmer and would like to have an online tool for programming and using it on the fly. here are some links

• http://www.tutorialspoint.com/codingground.htm
• https://ideone.com/
• http://cpp.sh/
• http://codepad.org/
• http://www.onlinecompiler.net/
• https://www.compilejava.net/
• https://www.remoteinterview.io/online-c-compiler
• https://www.codechef.com/ide

Please comment what online compiler you might use