类变量，成员变量和局部变量，全局变量之间的区别 [英] Difference between Class variable, Member variable, and Local variable, Global Variable

问题描述

要在`Class变量，Member变量，Local变量和Global变量之间进行分类?

Categorize between `Class variable, Member variable, Local variable and Global Variable?

推荐答案

在类定义中定义为静态的变量是类变量.

a variable defined static in class definition is class variable.

public MyClass
{
    static int a; // class variable
}

在函数(方法)中声明的变量是局部变量.

a variable declared in a function (Method) is local variable.

public class MyClass
{
    static void Main()
    {
        string name; //local variable
    }
}

在类定义中声明的变量，当实例化类时，这些变量将成为成员变量

a variable declared in a class definition, and when class is instantiated and those variables will be member variable

public class MyClass
{
    int a; // here they are local variable of class body.
    int b;
}

//create instance of class

MyClass mc = new MyClass();
mc.a = 10; //these are member variables
mc.b = 11;

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