1. Structures are sealed and cannot be inherited.
2. Structures cannot inherit classes and other structures.
3. Structure implicitly inherits from System.ValueType.
4. The default constructor of a structure cannot be replaced by a custom constructor.
5. Custom constructors of a structure must fully initialize the value of the structure.
6. Structures do not have destructors.
7. Field initialization is not allowed. Const members of a structure can be initialized