foo.c: In function 'main':
foo.c:7:31: warning: unknown conversion type character 'k' in format [-Wformat=]
    7 |         if (n%k==0) printf("n%k");
      |                               ^
foo.c:8:24: warning: unknown conversion type character 'k' in format [-Wformat=]
    8 |         else printf("n%k+n/k");
      |                        ^

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