#include <iostream>
 
enum TestEnum
{
   V1 = 0,
   V2
};
 
struct Foo
{
   bool          d1:1;
   TestEnum      d2:1;
   int           d3:1;
   unsigned int  d4:1;
};
 
int main()
{
   Foo foo;
   foo.d1 = true;
   foo.d2 = V2;
   foo.d3 = 1;
   foo.d4 = 1;
 
   std::cout << std::boolalpha;
 
   std::cout << "d1: " << foo.d1 << std::endl;
   std::cout << "d2: " << foo.d2 << std::endl;
   std::cout << "d3: " << foo.d3 << std::endl;
   std::cout << "d4: " << foo.d4 << std::endl;
   std::cout << std::endl;
 
   std::cout << (foo.d1 == true) << std::endl;
   std::cout << (foo.d2 == V2) << std::endl;
   std::cout << (foo.d3 == 1) << std::endl;
   std::cout << (foo.d4 == 1) << std::endl;
 
   return 0;
}
 

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