/in/foo.cc: In function 'int main()':
/in/foo.cc:56:24: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'int' [-Wformat=]
        printf("%ld\n",x);
                        ^
/in/foo.cc:59:38: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'int' [-Wformat=]
        printf("%ld/%ld\n",x/num,y/num);
                                      ^
/in/foo.cc:59:38: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'int' [-Wformat=]