/in/foo.c: In function 'main':
/in/foo.c:35:17: warning: comparison between pointer and integer
   35 |         if (sum > max) max = sum;
      |                 ^
/in/foo.c:35:28: warning: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   35 |         if (sum > max) max = sum;
      |                            ^