/in/foo.cc: In function 'int main()':
/in/foo.cc:5:7: warning: unused variable 'yes' [-Wunused-variable]
    5 |  char yes[]="Yes";
      |       ^~~
/in/foo.cc:6:7: warning: unused variable 'no' [-Wunused-variable]
    6 |  char no[]="No";
      |       ^~