Extend auto-indention for generic C/C++ source (sysprog21#29)

Author: ZhuMon

README.md

@@ -44,11 +44,10 @@ function! Formatonsave()
   let l:formatdiff = 1
   py3f <path to your clang-format.py>/clang-format.py
 endfunction
-autocmd BufWritePre *.h,*.cc,*.cpp call Formatonsave()
+autocmd BufWritePre *.h,*.hpp,*.c,*.cc,*.cpp call Formatonsave()
 ```
 Note: on Ubuntu Linux 18.04, the path to `clang-format.py` is `/usr/share/vim/addons/syntax/`.  
 
-
 ## Running the autograders
 
 Before running the autograders, compile your code to create the testing program `qtest`