/in/foo.c: In function 'main':
/in/foo.c:6:8: warning: too many arguments for format [-Wformat-extra-args]
  scanf("lld",&x1);
        ^~~~~
/in/foo.c:7:8: warning: too many arguments for format [-Wformat-extra-args]
  scanf("lld",&x2);
        ^~~~~
/in/foo.c:8:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("lld\n",x1+x2);
            ^~~~~~~
/in/foo.c:9:9: warning: too many arguments for format [-Wformat-extra-args]
  printf("lld\n",x1*x2);
         ^~~~~~~
/in/foo.c:10:9: warning: too many arguments for format [-Wformat-extra-args]
  printf("lld\n",x1%x2);
         ^~~~~~~