/in/foo.cc: In function 'int main()':
/in/foo.cc:5:8: warning: unknown escape sequence: '\040'
    5 |  cout<<"\    /\    /\n";
      |        ^~~~~~~~~~~~~~~~
/in/foo.cc:5:8: warning: unknown escape sequence: '\040'
/in/foo.cc:6:8: warning: unknown escape sequence: '\040'
    6 |  cout<<" \  /  \  / \n";
      |        ^~~~~~~~~~~~~~~~
/in/foo.cc:6:8: warning: unknown escape sequence: '\040'
/in/foo.cc:7:8: warning: unknown escape sequence: '\/'
    7 |  cout<<"  \/    \/  \n";
      |        ^~~~~~~~~~~~~~~~
/in/foo.cc:7:8: warning: unknown escape sequence: '\/'