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