/in/foo.cc: In function 'int fz(int, int, int)':
/in/foo.cc:8:7: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  mid=l+r>>1;
      ~^~
/in/foo.cc:35:3: error: expected ';' before '}' token
   }
   ^
/in/foo.cc:39:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^