/in/foo.cc: In function 'int main()':
/in/foo.cc:4:8: warning: unknown escape sequence: '\040'
    4 |  cout<<"\    /\    /"<<endl;
      |        ^~~~~~~~~~~~~~
/in/foo.cc:4:8: warning: unknown escape sequence: '\040'
/in/foo.cc:5:8: warning: unknown escape sequence: '\040'
    5 |  cout<<" \  /  \  /"<<endl;
      |        ^~~~~~~~~~~~~
/in/foo.cc:5:8: warning: unknown escape sequence: '\040'
/in/foo.cc:6:8: warning: unknown escape sequence: '\/'
    6 |  cout<<"  \/    \/"<<endl;
      |        ^~~~~~~~~~~~
/in/foo.cc:6:8: warning: unknown escape sequence: '\/'