foo.cc: In function 'int main()':
foo.cc:5:9: error: 'intn' was not declared in this scope; did you mean 'int'?
    5 |         intn,s=0;
      |         ^~~~
      |         int
foo.cc:5:14: error: 's' was not declared in this scope
    5 |         intn,s=0;
      |              ^
foo.cc:6:14: error: 'n' was not declared in this scope
    6 |         cin>>n;
      |              ^

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