Usually while you are trying to run c or cpp on a windows 7 or windows vista os it will not open in full screen.
if you choose ignore the editor will run on a small non re-sizable window, The other option is close to close the window.Then how can you run it on full screen?. Here in this post i am discussing about the same issue you are facing for long. All you have to do is download the software provided here and follow the steps in order.
STEPS:
1. Download the Software DOSBOX provided below the post.
2. Install it and run the application.
3. at the prompt in dosbox window type “intro mount” to get a window .
4. Type “mount c c:\tc” ( if “tc” is the name of folder you copied all files of turbo c change it if you have given any other name)
5. Then type type “c:”
6. Type “cd bin ” to change your directory to c:\tc\bin
7. Type “tc.exe” to run Turbo C
8. Now press ALT+ENTER KEY to run it on full screen.