/in/foo.cc: In function 'int main()':
/in/foo.cc:13:31: error: expected primary-expression before '=' token
   13 |                         delete=true;
      |                               ^
/in/foo.cc:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     while(leadingZeros<x.length()-1&&x[leadingZeros]=='0'){
      |           ~~~~~~~~~~~~^~~~~~~~~~~~~