Why do we need struct? (C#)

Question

To use a struct, we need to instantiate the struct and use it just like a class. Then why don\'t we just create a class in the first place?

Answer 1

Structs have many different semantics to classes. The differences are many but the primary reasons for their existence are:

1. They can be explicitly layed out in memmory
   • this allows certain interop scenarios
2. They may be allocated on the stack
   • Making some sorts of high performance code possible in a much simpler fashion