/in/foo.cc: In function 'void detect(std::string, std::string, std::string, int)':
/in/foo.cc:23:21: error: expected ';' before numeric constant
   23 |                 exit 0;
      |                     ^~
      |                     ;
/in/foo.cc:23:17: warning: statement is a reference, not call, to function 'exit' [-Waddress]
   23 |                 exit 0;
      |                 ^~~~
/in/foo.cc:23:17: warning: statement has no effect [-Wunused-value]