foo.cc: In function ‘int main()’:
foo.cc:59:19: warning: ‘e’ may be used uninitialized [-Wmaybe-uninitialized]
   59 |     cout<<b<<' '<<e<<endl;
      |                   ^
foo.cc:29:16: note: ‘e’ was declared here
   29 |     int i,b=-1,e;
      |                ^