C # BASICS (1)

1. object-oriented and user interfaces

To implement the class of a given interface, all methods and attributes of the interface must be implemented. For example, there is an IUser interface with the age, sex, and userName attributes, and the setUname () and getAge () methods. There is a class UserClass inherited from IUser. In this case, UserClass must implement all methods and attributes of IUser.

Ii. Huge differences between value types and reference types

For value types, variables directly store their data, while for reference types, variables only store the data address. Value types are generally stored in stacks, and reference types are generally stored in managed stacks.