foo.cc: In function 'int main()':
foo.cc:12:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   12 | int main() {freopen("question.in","r",stdin);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   13 |  freopen("question.out","w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Found 10 testcases.
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