INTERVIEW QUESTIONS MICROSOFT C# DETAILS

Question: What is mean "Death of Diamod"?

Answer: It is the diamond of death problem.
Multiple Inheritance means the ability to inherit from more than a single direct base class. For example:

class Derived : public Base1, private Base2
{
//...
};
Allowing MI introduces the possibility that a class may have the same (direct or indirect) base class appear more than once as an ancestor. A simple example of this is the "Diamond of Death" shape:

B
/
C1 C2
/
D
Here B is an indirect base class of D twice, once via C1 and once via C2.

This situation introduces the need to an extra feature in C++: virtual inheritance. Does the programmer want D to have one B subobject, or two? If one, B should be a virtual base class; if two, B should be a normal (nonvirtual) base class.

It is the diamond of death problem.
Multiple Inheritance means the ability to inherit from more than a single direct base class. For example:

class Derived : public Base1, private Base2
{
//...
};
Allowing MI introduces the possibility that a class may have the same (direct or indirect) base class appear more than once as an ancestor. A simple example of this is the "Diamond of Death" shape:

B
/
C1 C2
/
D
Here B is an indirect base class of D twice, once via C1 and once via C2.

This situation introduces the need to an extra feature in C++: virtual inheritance. Does the programmer want D to have one B subobject, or two? If one, B should be a virtual base class; if two, B should be a normal (nonvirtual) base class.


Source: CoolInterview.com

As every object is treated as a diamond in a Class we can say that destruction of a class object after it's functionality in order to recover the memory associated with this object is known as "Death of Diamond". Source: CoolInterview.com

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