Assuming "Link" is in the file "source1.h", then just declare an instance of it:
#include "stdafx.h"
#include <Source1.h>
Link myLink;
int _tmain(int argc, _TCHAR* argv[])
{
myLink.name[0] = 'A';
return 0;
}
That gives you a global instance "myLink" and you can use it's members.