foo.cc: In function 'int main()':
foo.cc:25:20: warning: 'xb1' may be used uninitialized [-Wmaybe-uninitialized]
   25 |         cout<<xb1<<" "<<max<<endl;
      |                    ^~~
foo.cc:6:32: note: 'xb1' was declared here
    6 |         int max=0,min=99999999,xb1,xb2;
      |                                ^~~
foo.cc:26:20: warning: 'xb2' may be used uninitialized [-Wmaybe-uninitialized]
   26 |         cout<<xb2<<" "<<min<<endl;
      |                    ^~~
foo.cc:6:36: note: 'xb2' was declared here
    6 |         int max=0,min=99999999,xb1,xb2;
      |                                    ^~~