How can I use the gcc compiler in xwindow?

How can I use the gcc compiler-general Linux technology-Linux programming and kernel information in xwindow? The following is a detailed description. I am a newbie. I just used Linux and used the fedora 9 version. I am not a computer professional, but a super rookie who just got started with Linux for a day, using Linux,
After the installation is complete, I directly enter xWindow. Then I create and edit a hello. c text on the desktop, and then press ctrl + alt + f6 to enter the command line mode.
Use gcc-o hello. c requires me to enter the password after compiling this file, so I enter the boot password. After a while, log incorrect is estimated that the file path cannot be found, so I will use gcc-o hello. c. When compiling this file, you should set hello. where is the c file stored? How does one view the file path under Linux xwindow?