foo.cc: In function 'std::string Binary(int)':
foo.cc:16:12: error: expected 'while' before 'binary'
   16 |     return binary;
      |            ^~~~~~
foo.cc:16:12: error: expected '(' before 'binary'
   16 |     return binary;
      |            ^~~~~~
      |            (
foo.cc:16:12: error: could not convert 'binary' from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'bool'
   16 |     return binary;
      |            ^~~~~~
      |            |
      |            std::string {aka std::__cxx11::basic_string<char>}
foo.cc:16:18: error: expected ')' before ';' token
   16 |     return binary;
      |            ~~~~~~^
      |                  )
foo.cc:17:1: warning: no return statement in function returning non-void [-Wreturn-type]
   17 | }
      | ^

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