`<iostream.h>`

Include the traditional header <iostream.h> to effectively include the standard header <iostream> and hoist its names outside the std namespace.

In this implementation, all names are hoisted, to provide a more traditional library environment.

#include <iostream>
using namespace std;

In this implementation, <iostream.h> does not declare the wide oriented stream objects wcin, wcout, wcerr, and wclog.

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