/in/foo.c: In function 'main':
/in/foo.c:10:9: error: break statement not within loop or switch
   10 |         break;
      |         ^~~~~
/in/foo.c:12:24: warning: too many arguments for format [-Wformat-extra-args]
   12 |                 printf("is a prime!\n",n);
      |                        ^~~~~~~~~~~~~~~
/in/foo.c:14:24: warning: too many arguments for format [-Wformat-extra-args]
   14 |                 printf("is not a prime!\n",n);
      |                        ^~~~~~~~~~~~~~~~~~~