In function 'int main()':
cc1plus: warning: iteration 2 invokes undefined behavior [-Waggressive-loop-optimizations]
/in/foo.cc:12:11: note: within this loop
  for(i=0;i<4;i++)
          ~^~
/in/foo.cc:4:14: warning: 'min' may be used uninitialized in this function [-Wmaybe-uninitialized]
  int i,j,max,min;
              ^~~