/in/foo.cc: In function 'int main()':
/in/foo.cc:5:12: warning: unknown escape sequence: '\040'
    5 |      cout<<"  \    /\    /"<<endl;
      |            ^~~~~~~~~~~~~~~~
/in/foo.cc:5:12: warning: unknown escape sequence: '\040'
/in/foo.cc:6:12: warning: unknown escape sequence: '\040'
    6 |      cout<<"    \  /  \  /"<<endl;
      |            ^~~~~~~~~~~~~~~~
/in/foo.cc:6:12: warning: unknown escape sequence: '\040'
/in/foo.cc:7:12: warning: unknown escape sequence: '\/'
    7 |      cout<<"    \/    \/"<<endl;
      |            ^~~~~~~~~~~~~~
/in/foo.cc:7:12: warning: unknown escape sequence: '\/'