/in/foo.c: In function 'main':
/in/foo.c:8:21: error: break statement not within loop or switch
    8 |         if (n%i==0) break;
      |                     ^~~~~
/in/foo.c:9:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    9 |         if (i=n)
      |             ^