/in/foo.cc: In function 'bool similar(std::__cxx11::string, std::__cxx11::string)':
/in/foo.cc:21:20: warning: left operand of comma operator has no effect [-Wunused-value]
   for(int i=0,j=0;i<la,j<lb;i++,j++){
                   ~^~~
/in/foo.cc:30:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^