/in/foo.cc: In function 'int main()':
/in/foo.cc:15:15: warning: 't' may be used uninitialized [-Wmaybe-uninitialized]
   15 |         cout<<t<<endl<<sum;
      |               ^
/in/foo.cc:5:23: note: 't' was declared here
    5 |         int a,b,sum=0,t;
      |                       ^