/in/foo.cc: In function 'int main()':
/in/foo.cc:4:11: warning: unknown escape sequence: '\040'
    4 |     cout<<"\    /\    /\n";
      |           ^~~~~~~~~~~~~~~~
/in/foo.cc:4:11: warning: unknown escape sequence: '\040'
/in/foo.cc:5:11: warning: unknown escape sequence: '\040'
    5 |     cout<<" \  /  \  /\n";
      |           ^~~~~~~~~~~~~~~
/in/foo.cc:5:11: warning: unknown escape sequence: '\040'
/in/foo.cc:6:11: warning: unknown escape sequence: '\/'
    6 |     cout<<"  \/    \/\n";
      |           ^~~~~~~~~~~~~~
/in/foo.cc:6:11: warning: unknown escape sequence: '\/'