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  • 传值、传址 结构体

     传值：将变量名中存放的值进行传输
 传址：将这个变量名直接传输过去，
 若在另一边有赋值情况，这边的值会发生变化
     1 private void 传值(int a)
 2         {
 3             a += 10;
 4         }
 5         static void Main(string[] args)
 6         {
 7                 //实例化   初始化   
 8                 Program hs = new Program();
 9                 int a = 0;
10                 hs.传值(a);//a不变
11         }
    传值
    将变量名中存放的值进行传输
     1 private void 传址(int a, out int b)
 2         {
 3             b = a + 10;
 4         }
 5         static void Main(string[] args)
 6         {
 7                 Program hs = new Program();
 8                 int a = 0;
 9                 int b = 0;
10                 hs.传址(a, out b);//b变
11         }
    传值
    将这个变量名直接传输过去

    out传址
    1  public void hanshu1(int a , out int b)
2         {
3             b = a + 10; 
4         }
5             int a = 5;
6             int rr;
7             hanshu.hanshu1(a,out rr);
8             Console.WriteLine(rr);
    OUT传值

    如果需要函数返回多个值时，可以用减号拼接起来，返回后用split分割开

    1 public string Fanhui(string name , string sex,int age)
2         {
3             age += 10;
4             return name + "-"+sex +"-"+ age;
5         }
    View Code

    结构体
    结构体：自定义类型    值类型一组变量的组合
    定义位置 Class里面 main函数外面
    结构体里面可以包含各种类型的数据
     1 struct Student
 2         {
 3             public int xuehao;
 4             public string name;
 5             public string sex;
 6             public Score score;
 7         }
 8 
 9         struct Score
10         {
11             public double yufen;
12             public double shufen;
13             public double yingfen;
14         }
15         static void Main(string[] args)
16         {
17             //实例化结构体
18             Student st = new Student();
19             st.xuehao = 1001;
20             st.name = "张三";
21             st.sex = "男";
22             st.score = 33;
23         }
    View Code
     1 struct student
 2         {
 3             public int xuehao;
 4             public string name;
 5             public string xingbie;
 6             public double fenshu;
 7         }
 8         static void Main(string[] args)
 9         {
10             ArrayList al = new ArrayList();
11             Console.Write("请输入班级人数");
12             int a = int.Parse(Console.ReadLine());
13             for (int i = 0; i < a;i++ )
14             {
15                 student sst = new student();
16                 Console.Write("请输入第{0}个学生的学号",(i+1));
17                 sst.xuehao = int.Parse(Console.ReadLine());
18                 Console.Write("请输入第{0}个学生的姓名", (i + 1));
19                 sst.name = Console.ReadLine();
20                 Console.Write("请输入第{0}个学生的性别", (i + 1));
21                 sst.xingbie = Console.ReadLine();
22                 Console.Write("请输入第{0}个学生的分数", (i + 1));
23                 sst.fenshu = double.Parse(Console.ReadLine());
24                 al.Add(sst);   
25             }
26             Console.WriteLine("所有人员名单输入完毕请按回车开始打印");
27             Console.ReadLine();
28             for (int i = 0; i < a;i++ )
29             {
30                 student sst=(student)al[i];
31                 Console.WriteLine("第{0}个学生的学号是{1}姓名是{2}性别是{3}分数为{4}",(i+1),sst.xuehao,sst.name,sst.xingbie,sst.fenshu);
32             }
    View Code

    去超市选择要购买的商品            

    0.开始购买            

    1.洗发水   15元            

    2.牙刷      5元            

    3.可口可乐 3元            

    4.水杯      12元            

    5.毛巾      6元            

    6.结算

    输入想要的物品编号，输入每种商品需要买几件

    结算：需要列出来商品名称、单价、数量、

    总价以及所有物品总价，结账时间

    然后输入交给收银员的钱数，

    不够，请继续交钱

    够，结算，找钱

      1 Console.WriteLine("0.开始购买");
  2             //Console.WriteLine("1.洗发水      15元");
  3             //Console.WriteLine("2.牙刷        5元");
  4             //Console.WriteLine("3.可口可乐    3元");
  5             //Console.WriteLine("4.水杯        12元");
  6             //Console.WriteLine("5.毛巾        6元");
  7             Console.WriteLine("6.结算（退出）");
  8 
  9             Console.Write("请输入号码：");
 10             for (int i = 0; i == 0; )
 11             {
 12                 int aa = int.Parse(Console.ReadLine());
 13                 if (aa == 0)
 14                 {
 15                     ArrayList al = new ArrayList();
 16                     int biao1 = 0;
 17                     for (int j = 0; j == 0; )
 18                     {
 19                         bool biaocuo = true;
 20                         string[] array = new string[3];
 21                         Console.Clear();
 22                         if (al.Count > 0)
 23                         {
 24                             for (int k = 0; k < al.Count; k++)
 25                             {
 26                                 string[] yigou = (string[])al[k];
 27                                 Console.WriteLine("您选择了{0}，单价为{1}元，数量为{2}。", yigou[0], yigou[1], yigou[2]);
 28                             }
 29                         }
 30                         Console.WriteLine("1.洗发水      15元");
 31                         Console.WriteLine("2.牙刷        5元");
 32                         Console.WriteLine("3.可口可乐    3元");
 33                         Console.WriteLine("4.水杯        12元");
 34                         Console.WriteLine("5.毛巾        6元");
 35                         Console.WriteLine("6.结算");
 36 
 37                         Console.Write("请输入选项：");
 38                         int aaa = int.Parse(Console.ReadLine());
 39                         switch (aaa)
 40                         {
 41                             case 1:
 42                                 array[0] = "洗发水";
 43                                 array[1] = "15";
 44                                 biao1++;
 45                                 Console.Write("您选择的是洗发水，请问您需要多少瓶？");
 46                                 break;
 47                             case 2:
 48                                 array[0] = "牙刷";
 49                                 array[1] = "5";
 50                                 biao1++;
 51                                 Console.Write("您选择的是牙刷，请问您需要多少支？");
 52                                 break;
 53                             case 3:
 54                                 array[0] = "可口可乐";
 55                                 array[1] = "3";
 56                                 biao1++;
 57                                 Console.Write("您选择的是可口可乐，请问您需要多少瓶？");
 58                                 break;
 59                             case 4:
 60                                 array[0] = "水杯";
 61                                 array[1] = "12";
 62                                 biao1++;
 63                                 Console.Write("您选择的是水杯，请问您需要多少个？");
 64                                 break;
 65                             case 5:
 66                                 array[0] = "毛巾";
 67                                 array[1] = "6";
 68                                 biao1++;
 69                                 Console.Write("您选择的是毛巾，请问您需要多少块？");
 70                                 break;
 71                             case 6:
 72                                 if (biao1 == 0)
 73                                 {
 74                                     Console.Clear();
 75                                     Console.WriteLine("您什么也没有购买，您已经走出了超市。。。");
 76                                     j = 1;
 77                                     i = 1;
 78                                 }
 79                                 else
 80                                 {
 81                                     int zong = 0;
 82                                     for (int k = 0; k < al.Count; k++)
 83                                     {
 84                                         string[] yigou = (string[])al[k];
 85                                         Console.WriteLine("您选择了{0}，单价为{1}元，数量为{2}，单品总价：{3}。", yigou[0], yigou[1], yigou[2], (int.Parse(yigou[1]) * int.Parse(yigou[2])));
 86                                         zong += int.Parse(yigou[1]) * int.Parse(yigou[2]);
 87                                     }
 88                                     Console.Write("总价：" + zong + "元。请缴费：");
 89                                     int erjiao = 0;
 90                                     for (int l = 0; l == 0; )
 91                                     {
 92                                         int jiao = int.Parse(Console.ReadLine());
 93                                         jiao += erjiao;
 94                                         if (jiao >= zong)
 95                                         {
 96                                             Console.WriteLine("交易成功，交易时间为：" + DateTime.Now);
 97                                             Console.WriteLine("找零：" + (jiao - zong) + "元。");
 98                                             Console.WriteLine("谢谢惠顾！再见！");
 99                                             l = 1;
100                                             j = 1;
101                                             i = 1;
102                                         }
103                                         else
104                                         {
105                                             erjiao = jiao;
106                                             Console.Write("缴费金额不足，请继续缴费：");
107                                         }
108                                     }
109                                 }
110                                 break;
111                             default:
112                                 Console.WriteLine("查无此商品！请按回车键继续选择商品！");
113                                 Console.ReadLine();
114                                 biaocuo = false;
115                                 break;
116                         }
117                         if (i == 0 && j == 0 && biaocuo == true)
118                         {
119                             array[2] = Console.ReadLine();
120                             Console.WriteLine("您选择了{0}，单价为{1}元，数量为{2}。请按回车键继续购买！", array[0], array[1], array[2]);
121                             al.Add(array);
122                             Console.ReadLine();
123                         }
124                     }
125                 }
126                 else if (aa == 6)
127                 {
128                     Console.Clear();
129                     Console.WriteLine("您什么也没有购买！您已走出超市。。。");
130                     i = 1;
131                 }
132                 else
133                 {
134                     Console.Write("输入有误！请重新输入：");
135                 }
136             }
    超市购物

      1 struct swe
  2         {/*
  3             public string chexing;
  4             public int jiage;
  5             public int mm;
  6             public double l;
  7         }
  8         static void Main(string[] args)
  9         {
 10             ArrayList al = new ArrayList();
 11             swe swe10 = new swe();
 12             swe10.chexing = "宝马320Li ";
 13             swe10.jiage = 38;
 14             swe10.mm = 2920;
 15             swe10.l = 6.9;
 16             al.Add(swe10);
 17 
 18             swe swe1 = new swe();
 19             swe1.chexing = "宝马520Li";
 20             swe1.jiage = 43;
 21             swe1.mm = 3108;
 22             swe1.l = 7.2;
 23             al.Add(swe1);
 24 
 25             swe swe2 = new swe();
 26             swe2.chexing = "宝马730Li ";
 27             swe2.jiage = 89;
 28             swe2.mm = 3210;
 29             swe2.l = 6.3;
 30             al.Add(swe2);
 31 
 32             swe swe3 = new swe();
 33             swe3.chexing = "奥迪A4L35TFSI  ";
 34             swe3.jiage = 31;
 35             swe3.mm = 2869;
 36             swe3.l = 6.2;
 37             al.Add(swe3);
 38 
 39             swe swe4 = new swe();
 40             swe4.chexing = "奥迪A6L30TFSI";
 41             swe4.jiage = 43;
 42             swe4.mm = 3012;
 43             swe4.l = 7.6;
 44             al.Add(swe4);
 45 
 46             swe swe5 = new swe();
 47             swe5.chexing = "奥迪A8L45TFSI";
 48             swe5.jiage = 89;
 49             swe5.mm = 3122;
 50             swe5.l = 8.1;
 51             al.Add(swe5);
 52 
 53             swe swe6 = new swe();
 54             swe6.chexing = "奔驰C200L ";
 55             swe6.jiage = 35;
 56             swe6.mm = 2920;
 57             swe6.l = 6.1;
 58             al.Add(swe6);
 59 
 60             swe swe7 = new swe();
 61             swe7.chexing = "奔驰E260L  ";
 62             swe7.jiage = 48;
 63             swe7.mm = 3014;
 64             swe7.l = 6.7;
 65             al.Add(swe7);
 66 
 67             swe swe8 = new swe();
 68             swe8.chexing = "奔驰S320L ";
 69             swe8.jiage = 93;
 70             swe8.mm = 3165;
 71             swe8.l = 8;
 72             al.Add(swe8);
 73 
 74             for (int i = 0; i < 8; i++)
 75             {
 76                 for (int j = i + 1; j < 9; j++)
 77                 {
 78                     if (((swe)al[i]).jiage < ((swe)al[j]).jiage)
 79                     {
 80                         object zhong = al[i];
 81                         al[i] = al[j];
 82                         al[j] = zhong;
 83                     }
 84                 }
 85             }
 86             //所有在售车辆中最便宜的
 87             Console.WriteLine("在售车辆中最便宜的{0}", ((swe)al[8]).chexing);
 88             Console.WriteLine("-----------------------------------------------------------------------------------------");
 89 
 90             //求宝马中最便宜的车型是什么，所有信息列出
 91             ArrayList al1 = new ArrayList();
 92             for (int i = 0; i < 9; i++)
 93             {
 94                 swe sk = new swe();
 95                 sk = (swe)al[i];
 96                 if (sk.chexing.Contains("宝马"))
 97                 {
 98                     al1.Add(sk);
 99                 }
100             }
101             for (int i = 0; i < al1.Count - 1; i++)
102             {
103                 for (int j = i + 1; j < al1.Count; j++)
104                 {
105                     if (((swe)al1[i]).jiage > ((swe)al1[j]).jiage)
106                     {
107                         object zhong = al1[i];
108                         al1[i] = al1[j];
109                         al1[j] = zhong;
110                     }
111                 }
112             }
113             Console.WriteLine("宝马中最便宜的车型{0}", ((swe)al1[0]).chexing);
114             Console.WriteLine("-----------------------------------------------------------------------------------------");
115 
116             //选个轴距最长的
117             for (int i = 0; i < 8; i++)
118             {
119                 for (int j = i + 1; j < 9; j++)
120                 {
121                     if (((swe)al[i]).mm < ((swe)al[j]).mm)
122                     {
123                         object zhong = al[i];
124                         al[i] = al[j];
125                         al[j] = zhong;
126                     }
127                 }
128             }
129             Console.WriteLine("轴距最长的{0}", ((swe)al[0]).chexing);
130             Console.WriteLine("-----------------------------------------------------------------------------------------");
131 
132             //选个轴距最长的，必须是奔驰
133             ArrayList al2 = new ArrayList();
134             for (int i = 0; i < 9; i++)
135             {
136                 swe sk = new swe();
137                 sk = (swe)al[i];
138                 if (sk.chexing.Contains("奔驰"))
139                 {
140                     al2.Add(sk);
141                 }
142             }
143             for (int i = 0; i < al1.Count - 1; i++)
144             {
145                 for (int j = i + 1; j < al1.Count; j++)
146                 {
147                     if (((swe)al2[i]).mm < ((swe)al2[j]).mm)
148                     {
149                         object zhong = al2[i];
150                         al2[i] = al2[j];
151                         al2[j] = zhong;
152                     }
153                 }
154             }
155             Console.WriteLine("轴距最长的{0}", ((swe)al2[0]).chexing);
156             Console.WriteLine("-----------------------------------------------------------------------------------------");
157 
158             //想要一辆油耗最低的车
159             for (int i = 0; i < 8; i++)
160             {
161                 for (int j = i + 1; j < 9; j++)
162                 {
163                     if (((swe)al[i]).l < ((swe)al[j]).l)
164                     {
165                         object zhong = al[i];
166                         al[i] = al[j];
167                         al[j] = zhong;
168                     }
169                 }
170             }
171             Console.WriteLine("油耗最低的车是{0}", ((swe)al[8]).chexing);
172             Console.WriteLine("-----------------------------------------------------------------------------------------");
173             Console.WriteLine("油耗最高的车是{0}", ((swe)al[0]).chexing);
174             Console.WriteLine("-----------------------------------------------------------------------------------------");
175 
176             //想要一辆油耗最低的奥迪车
177             ArrayList al3 = new ArrayList();
178             for (int i = 0; i < 9; i++)
179             {
180                 swe sk = new swe();
181                 sk = (swe)al[i];
182                 if (sk.chexing.Contains("奥迪"))
183                 {
184                     al3.Add(sk);
185                 }
186             }
187             for (int i = 0; i < al3.Count - 1; i++)
188             {
189                 for (int j = i + 1; j < al3.Count; j++)
190                 {
191                     if (((swe)al3[i]).l > ((swe)al3[j]).l)
192                     {
193                         object zhong = al3[i];
194                         al3[i] = al3[j];
195                         al3[j] = zhong;
196                     }
197                 }
198             }
199             Console.WriteLine("油耗最低的奥迪车{0}", ((swe)al3[0]).chexing);
200             Console.WriteLine("-----------------------------------------------------------------------------------------");
201 
202             //我只有50万，看看能买什么车
203             for (int i = 0; i < 9; i++)
204             {
205                 swe sk = (swe)al[i];
206                 if (sk.jiage < 50)
207                 {
208                     Console.WriteLine("小于50万的车有{0}价格{1}轴距{2}油耗{3}", sk.chexing, sk.jiage, sk.mm, sk.l);
209                     Console.WriteLine("-----------------------------------------------------------------------------------------");
210                 }
211             }
212             //我只需要60万以上的车，列出来所有车型和所有信息
213             for (int i = 0; i < 9; i++)
214             {
215                 swe sk = (swe)al[i];
216                 if (sk.jiage > 60)
217                 {
218                     Console.WriteLine("大于60万的车有{0}----价格{1}----轴距{2}----油耗{3}", sk.chexing, sk.jiage, sk.mm, sk.l);
219                     Console.WriteLine("-----------------------------------------------------------------------------------------");
220                 }
221             }
222             //轴距必须超过3m
223             for (int i = 0; i < 9; i++)
224             {
225                 swe sk = (swe)al[i];
226                 if (sk.mm > 3000)
227                 {
228                     Console.WriteLine("轴距超过三米的{0}----价格{1}----轴距{2}----油耗{3}", sk.chexing, sk.jiage, sk.mm, sk.l);
229                     Console.WriteLine("-----------------------------------------------------------------------------------------");
230                 }
231             }
232 
233              //油耗在8.5以下都行，列列表
234             for (int i = 0; i < 9; i++)
235             {
236                 swe sk = (swe)al[i];
237                 if (sk.l < 8.5)
238                 {
239                     Console.WriteLine("耗在8.5以下的{0}----价格{1}----轴距{2}----油耗{3}", sk.chexing, sk.jiage, sk.mm, sk.l);
240                     Console.WriteLine("-----------------------------------------------------------------------------------------");
241                 }
242             }*/
    存放关于车辆的几个信息 //将所有车的信息都放入集合中

     
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  • 原文地址：https://www.cnblogs.com/1030351096zzz/p/5978804.html
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