/in/foo.c: In function 'main':
/in/foo.c:14:24: warning: too many arguments for format [-Wformat-extra-args]
   14 |                 printf("x是回文数\n",x);}
      |                        ^~~~~~~~~~~~~
/in/foo.c:16:24: warning: too many arguments for format [-Wformat-extra-args]
   16 |                 printf("x不是回文数\n",x);}
      |                        ^~~~~~~~~~~~~~~