C# 课程
在 C# 中,一个类可以作为数据类型的蓝图。对象是类的实例。构成一个类的成员是方法和变量。
示例
以下为 C# 中类的常规形式 −
<access specifier> class class_name { // member variables <access specifier><data type> variable1; <access specifier><data type> variable2; ... <access specifier><data type> variableN; // member methods <access specifier><return type> method1(parameter_list) { // method body } <access specifier><return type> method2(parameter_list) { // method body } ... <access specifier><return type> methodN(parameter_list) { // method body } }
让我们看一个示例来了解如何用 C# 创建一个类 −
示例
using System; namespace Demo { class Box { public double length; // Length of a box public double breadth; // Breadth of a box public double height; // Height of a box } class Boxtester { static void Main(string[] args) { Box Box1 = new Box(); // Declare Box1 of type Box Box Box2 = new Box(); // Declare Box2 of type Box double volume = 0.0; // Store the volume of a box here // box 1 specification Box1.height = 5.0; Box1.length = 6.0; Box1.breadth = 7.0; // box 2 specification Box2.height = 10.0; Box2.length = 12.0; Box2.breadth = 13.0; // volume of box 1 volume = Box1.height * Box1.length * Box1.breadth; Console.WriteLine("Volume of Box1 : {0}", volume); // volume of box 2 volume = Box2.height * Box2.length * Box2.breadth; Console.WriteLine("Volume of Box2 : {0}", volume); Console.ReadKey(); } } }
输出
Volume of Box1 : 210 Volume of Box2 : 1560
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