Converting Terminal Window Program to Desktop

I have installed Xcode 4.5. I can compile C source code with gcc to produce an executable program that will run in the OS X terminal window. How can I place this or a similar program on my desktop and have it run from there so that the user need not be familiar with the terminal window? What kind of programming would that take?

Thank you for your help.

Jim Adrian
jim@futurebeacon.com