How to compile C program on command line using MinGW?

Question

What command does one have to enter at the command line in Windows 7 to compile a basic C program?

Like I am literally wondering what you type in the command prompt, to

Answer 1

I've had this problem and couldn't find why it kept happening. The reason is simple: Once you have set up the environment paths, you have to close the CMD window, and open it again for it be aware of new environment paths.