c# 从零到精通-定义一个结构
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Test01
{
class Program
{
public struct Rect//定义一个矩形结构
{
public double width;//矩形的宽
public double height;//矩形的高
///
/// 构造函数，初始化矩形的宽和高
///
/// 矩形的宽
/// 矩形的高
public Rect(double x, double y)
{
width = x;
height = y;
}
///
/// 计算矩形面积
///
/// 矩形面积
public double Area()
{
return width * height;
}
}
static void Main(string[] args)
{
Rect rect1;//创建矩形结构
rect1.width = 5;//为矩形宽赋值
rect1.height = 3;//为矩形高赋值
Console.WriteLine(“矩形面积为：” + rect1.Area());
Rect rect2 = new Rect(6, 4);//使用构造函数实例化矩形结构
Console.WriteLine(“矩形面积为：” + rect2.Area());
}

}
}