foo.c: In function 'printNode':
foo.c:61:1: warning: control reaches end of non-void function [-Wreturn-type]
   61 | }
      | ^
foo.c: In function 'main':
foo.c:67:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   67 |         scanf("%d", &n);
      |         ^~~~~~~~~~~~~~~

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