foo.cc:1:2: error: invalid preprocessing directive #inc
    1 | #inc#include<iostream>
      |  ^~~
foo.cc: In function 'int main()':
foo.cc:18:5: error: 'cin' was not declared in this scope
   18 |     cin>>n;
      |     ^~~
foo.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
  +++ |+#include <iostream>
    1 | #inc#include<iostream>
foo.cc:19:5: error: 'cout' was not declared in this scope
   19 |     cout<<climblt(n) << endl;
      |     ^~~~
foo.cc:19:5: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
foo.cc:19:25: error: 'endl' was not declared in this scope
   19 |     cout<<climblt(n) << endl;
      |                         ^~~~
foo.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; did you forget to '#include <ostream>'?
  +++ |+#include <ostream>
    1 | #inc#include<iostream>

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