foo.c: In function 'main':
foo.c:7:18: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int' [-Wformat=]
    7 |         printf("%s",n);
      |                 ~^  ~
      |                  |  |
      |                  |  int
      |                  char *
      |                 %d

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