/in/foo.cc: In function 'void work()':
/in/foo.cc:90:8: warning: unused variable 'tmpy' [-Wunused-variable]
    int tmpy,tmpx=x;
        ^~~~
/in/foo.cc:102:8: warning: unused variable 'tmpx' [-Wunused-variable]
    int tmpx,tmpy=y;
        ^~~~