foo.cc: In function 'int main()':
foo.cc:23:6: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   23 |      else
      |      ^~~~
foo.cc:27:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   27 |  return 0;
      |  ^~~~~~
foo.cc:11:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 |       scanf("%d", &n);
      |       ~~~~~^~~~~~~~~~

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