/in/foo.cc: In member function 'int Student::input()':
/in/foo.cc:20:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:51:32: warning: 'maxi' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int n, sum = 0, maxm = -1, maxi;
                                ^~~~