/in/foo.cc: In function 'int main()':
/in/foo.cc:32:10: warning: unused variable 'y' [-Wunused-variable]
  int x=1,y=1,z=0,bx=0;
          ^
/in/foo.cc:32:14: warning: unused variable 'z' [-Wunused-variable]
  int x=1,y=1,z=0,bx=0;
              ^
/in/foo.cc:32:18: warning: unused variable 'bx' [-Wunused-variable]
  int x=1,y=1,z=0,bx=0;
                  ^~