foo.cc: In function 'int printNode(int)':
foo.cc:62:1: warning: no return statement in function returning non-void [-Wreturn-type]
   62 | }
      | ^
foo.cc: In function 'int main()':
foo.cc:68:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   68 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~

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