foo.cc:1:1: error: 'include' does not name a type
    1 | include <iostream>
      | ^~~~~~~
foo.cc: In function 'int main()':
foo.cc:7:1: error: 'cin' was not declared in this scope
    7 | cin>>d;
      | ^~~
foo.cc:16:1: error: 'cout' was not declared in this scope
   16 | cout<<sum<<endl;
      | ^~~~
foo.cc:16:12: error: 'endl' was not declared in this scope
   16 | cout<<sum<<endl;
      |            ^~~~

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