foo.cc: In function 'int main()':
foo.cc:8:33: error: expression in new-declarator must have integral or enumeration type
    8 |         float* ages = new float[n];
      |                                 ^
foo.cc:5:15: warning: unused variable 'a' [-Wunused-variable]
    5 |         float a[1];
      |               ^

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