C # Basic Grammar review-use enumerations and structs to create value types

Declaring enumerations:

Enum Season{spring,summer,fall,winter}

If you do not specify a constant integer type for enumerating an enumerated literal constant, the compiler automatically assigns a value to him that is older than the previous enumerated literal constant.

Enum Season{spring=1,summer,fall,autumn=fall,winter}

Select the basic type of enumeration:

Enum Season:short{spring,summer,fall,winter}

Declaration structure:

struct TIME

{

private int hours,minutes,seconds;

Public time (int hh,int mm,int SS)

{

hours=hh%24;

minutes=mm%60;

seconds=ss%60;

}

public int hours ()

{

return hours;

}

}

Understand the differences between structs and classes:

You cannot declare a default constructor for a struct, the compiler always declares a constructor for us, the default constructor always initializes the field to Null,0,false, and if you write a non-default constructor, all fields are initialized;

The class can be declared again when an instance field is initialized, but is not allowed in the structure;

To copy a struct variable:

If the struct variable on the right is fully initialized, it can be copied directly to the left;

C # Basic Grammar review-use enumerations and structs to create value types