If you created an empty C project, the area in the center should be blank until you create a source file like 'hello.c' and open it. Can you see the Project Explorer pane on the left-hand side with a folder that has the name of the project you created? If you can't see the Project Explorer pane, go to the Window menu > Show View > Project Explorer. Then just right-click on your project folder > New > Source File > type something like 'hello.c' and hit [Finish].
How can i see if MinGW bin directory is in my windows PATH
Already answered: Open a command prompt and type: echo %PATH%
If none of that helps, instead of messing with the Windows PATH, you might try moving the MinGW install into C:\MinGW\ so gcc.exe will be in C:\MinGW\bin\ - but if you do that and then later try to uninstall MinGW, the uninstaller will probably fail. I didn't use the full-blown Windows installer for MinGW like it appears you did. Since I installed from command line with "mingw-get.exe" which was in "mingw-get-0.5-mingw32-beta-20120426-1-bin.zip" from SourceForge, I don't have an Uninstaller and so it shouldn't matter if I moved MinGW to C:\MinGW\.