/in/foo.cc: In function 'int main()':
/in/foo.cc:26:15: warning: 'tot' may be used uninitialized [-Wmaybe-uninitialized]
   26 |         cout<<tot;
      |               ^~~
/in/foo.cc:12:15: note: 'tot' was declared here
   12 |         int n,tot;
      |               ^~~