foo.cc: In function 'int main()':
foo.cc:11:14: error: 'h' was not declared in this scope
   11 | cout<<sizeof(h)<<" "<<sizeof(v)<<endl;
      |              ^
foo.cc:9:7: warning: unused variable 'n' [-Wunused-variable]
    9 | float n;
      |       ^

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