foo.cc: In function 'Node* Create(int)':
foo.cc:13:17: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   13 |                 scanf_s("%d", &x);
      |                 ^~~~~~~
      |                 scanf
foo.cc: In function 'int main()':
foo.cc:39:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   39 |         scanf_s("%d", &n);
      |         ^~~~~~~
      |         scanf

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