/in/foo.cc: In member function 'void Array::add()':
/in/foo.cc:15:21: warning: unused variable 'i' [-Wunused-variable]
   15 |                 int i = 0;
      |                     ^
/in/foo.cc:16:21: warning: unused variable 't' [-Wunused-variable]
   16 |                 int t;
      |                     ^