How to run home-made programs?

I used g++ to compile a simple "Hello world" C++ program. It produced the "a.out" executable. If I try to run the "a.out" executable, I get "Command not found". How can I run my home-made programs?
mariocouAsked:
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mpassCommented:
The "Command not found" error is because your program is in a directory not located in your path. You can remedy this by adding the directory of the file to your path or just put a './' in front of your executable file. So as long as your file is executable, you can do this "./a.out" (w/o the quotes) and the program should run.

In case your file is not executable, just "chmod 777 a.out"

If you still have problems, please leave a comment. Thanks.
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EatEmAndSmileCommented:
If the ¨.¨ directory is not in your path, you're probably running it as root. This is not recommended.
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