What operating system do u use ???
If u use Windows 7:
- Open Windows Explorer and click the Organize button towards the top left. Choose Folder and search options from the menu.
- Click the View tab in the window that opens, then scroll down and untick the box next to "Hide file extensions for known file types"
< http://imgur.com/Bu5IC1j>
If u use Windows 8:
- Simply open a File Explorer window (the new name for Windows Explorer) and click the View tab.
- Now tick or untick the box next to File name extensions. If the box is ticked, extensions will be shown. If unticked, they won’t.
< http://imgur.com/tS8RfeB>
I am not sure, if that's what you asked for. 
However, with or without extension, the executable file should work. !!!