foo.cc: In function 'int main()':
foo.cc:7:5: error: expected ';' before 'n'
    7 |  cin n;
      |     ^~
      |     ;
foo.cc:7:2: warning: statement has no effect [-Wunused-value]
    7 |  cin n;
      |  ^~~
foo.cc:11:3: error: 'cnt' was not declared in this scope; did you mean 'nt'?
   11 |   cnt+=a[i];
      |   ^~~
      |   nt
foo.cc:13:2: error: 'cnt' was not declared in this scope; did you mean 'nt'?
   13 |  cnt/=n;
      |  ^~~
      |  nt
foo.cc:6:9: warning: unused variable 'nt' [-Wunused-variable]
    6 |  double nt=0;
      |         ^~

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