Running Programs from Inside Emacs

[haziz]

When using emacs for programming in C, I know how to compile programs from 
inside emacs using Mx compile to invoke make -k which then compiles using gcc 
(I am running Linux Mint on a desktop machine at home and also use Mac OS X on 
a laptop). 

I have so far been unable to figure out how to "run" the resulting binary from 
inside emacs. I would like to be able to then run the binary file from inside 
emacs. So far I have had to exit emacs returning to my bash shell to run the 
binary by for e.g.    ./helloworld

Is it possible to get a shell prompt inside emacs and run the file in a 
secondary buffer within emacs?

I have tried to do a google search about this but most search results seem to 
talk only about Mx compile and stop there.

Thanks.

Sincerely,

Hany.