1.传真 传址
namespace 传值_传址
{
class Program
{
//格式1：无参无返
public void LeiJia()
{
Console.Write("请输入一个正整数：");
int a = int.Parse(Console.ReadLine());
int sum = 0;
for (int i = 1; i <= a;i++ )
{
sum += i;
}
Console.WriteLine(sum);
}
//格式2：有参无返
public void LeiJia(int zhengshu)
{
int sum = 0;
for (int i = 1; i <= zhengshu; i++)
{
sum += i;
}
Console.WriteLine(sum);
}
//格式3：有参有返
public int LeiJia1(int zhengshu)
{
int sum = 0;
for (int i = 1; i <= zhengshu; i++)
{
sum += i;
}
return sum;
}
//格式4：无参有返
public int Leijia2()
{
Console.Write("请输入一个正整数：");
int a = int.Parse(Console.ReadLine());
int sum = 0;
for (int i = 1; i <= a; i++)
{
sum += i;
}
return sum;
}
//写个函数，传值进去，传姓名、性别、年龄进入
//将年龄+10岁
//反馈回来
public string Fanhui(string name , string sex,int age)
{
age += 10;
return name + "-"+sex +"-"+ age;
}
//传值
public void Hanshu(int a)
{
a += 10;
}
//传址
public void hanshu1(int a , out int b,out int c)
{
//int c = a + b;
b = a + 10;
c = b;
}
public int AA = 5;
static void Main(string[] args)
{
//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
//调用函数之前需要先初始化该Class 类
Program hanshu = new Program();
//Console.Write("请输入一个正整数：");
//int a = int.Parse(Console.ReadLine());
//hanshu.Hanshu(a);
//Console.WriteLine(a);
hanshu.AA = 100;
Console.WriteLine(hanshu.AA);
int a = 5;
int rr;
int tt;
hanshu.hanshu1(a,out rr,out tt);
Console.WriteLine(rr);
//调用格式1
//hanshu.LeiJia();
//调用格式2
//hanshu.LeiJia(15);
//调用格式3
//int sum = hanshu.LeiJia1(12);
//Console.WriteLine(sum);
//调用格式4
//int sum = hanshu.Leijia2();
//Console.WriteLine(sum);
//string s = hanshu.Fanhui("张三","男",33);
//string[] aa = s.Split(‘-‘);
//foreach(string q in aa)
//{
// Console.WriteLine(q);
//}
传真 传址
2.结构体
结构体：自定义类型 值类型
一组变量的组合
需要定义的位置 class里面 main函数外面
里面包含的变量可以是多种数据类型的
1 namespace 结构体
2 {
3 class Program
4 {
5
6
7 struct Student
8 {
9 public int xuehao;
10 public string name;
11 public string sex;
12 public Score score;
13 }
14
15 struct Score
16 {
17 public double yufen;
18 public double shufen;
19 public double yingfen;
20 }
21
22 struct Shop
23 {
24 public string name;
25 public double price;
26 public int shuliang;
27 }
28
29 static void Main(string[] args)
30 {
31 //实例化结构体
32 //Student st = new Student();
33 //st.xuehao = 1001;
34 //st.name = "张三";
35 //st.sex = "男";
36 //st.score = 33;
37
38 //Student st1 = new Student();
39 //st1.xuehao = 1002;
40 //st1.name = "李四";
41 //st1.sex = "女";
42 //st1.score = 44;
43
44
45 //ArrayList al = new ArrayList();
46 //Console.Write("请输入班级人数：");
47 //int a = int.Parse(Console.ReadLine());
48 //for (int i = 0; i < a;i++ )
49 //{
50 // Student sst = new Student();
51 // Console.Write("请输入第{0}个学生的学号：",(i+1));
52 // sst.xuehao = int.Parse(Console.ReadLine()) ;
53 // Console.Write("请输入第{0}个学生的姓名：", (i + 1));
54 // sst.name = Console.ReadLine();
55 // Console.Write("请输入第{0}个学生的性别：", (i + 1));
56 // sst.sex = Console.ReadLine();
57 // Console.Write("请输入第{0}个学生的分数：", (i + 1));
58 // sst.score = double.Parse(Console.ReadLine());
59 // al.Add(sst);
60 //}
61 //Console.WriteLine("所有人员信息输入完毕！请按回车键开始打印！");
62 //Console.ReadLine();
63
64 //for (int i = 0; i < al.Count;i++ )
65 //{
66 // Student sst = (Student)al[i];
67 // Console.WriteLine("第{0}个学生的学号是：{1}，姓名是{2}，性别是{3}，分数是{4}。",(i+1),sst.xuehao,sst.name,sst.sex,sst.score);
68 //}
69
70
71 ////实例化
72 //Student st = new Student();
73 //st.score.yufen = 77;
74 //st.score.shufen = 88;
75 //st.score.yingfen = 99;
结构体
3.超市购物 例题 方法二
Console.WriteLine("0.开始购买");
//Console.WriteLine("1.洗发水 15元");
//Console.WriteLine("2.牙刷 5元");
//Console.WriteLine("3.可口可乐 3元");
//Console.WriteLine("4.水杯 12元");
//Console.WriteLine("5.毛巾 6元");
Console.WriteLine("6.结算（退出）");
Console.Write("请输入号码：");
for (int i = 0; i == 0; )
{
int aa = int.Parse(Console.ReadLine());
if (aa == 0)
{
ArrayList al = new ArrayList();
int biao1 = 0;
for (int j = 0; j == 0; )
{
bool biaocuo = true;
//string[] array = new string[3];
Shop array = new Shop();
Console.Clear();
if (al.Count > 0)
{
for (int k = 0; k < al.Count; k++)
{
//string[] yigou = (string[])al[k];
Shop yigou = (Shop)al[k];
//Console.WriteLine("您选择了{0}，单价为{1}元，数量为{2}。", yigou[0], yigou[1], yigou[2]);
Console.WriteLine("您选择了{0}，单价为{1}元，数量为{2}。", yigou.name, yigou.price, yigou.shuliang);
}
}
Console.WriteLine("1.洗发水 15元");
Console.WriteLine("2.牙刷 5元");
Console.WriteLine("3.可口可乐 3元");
Console.WriteLine("4.水杯 12元");
Console.WriteLine("5.毛巾 6元");
Console.WriteLine("6.结算");
Console.Write("请输入选项：");
int aaa = int.Parse(Console.ReadLine());
switch (aaa)
{
case 1:
//array[0] = "洗发水";
//array[1] = "15";
array.name = "洗发水";
array.price = 15;
biao1++;
Console.Write("您选择的是洗发水，请问您需要多少瓶？");
break;
case 2:
//array[0] = "牙刷";
//array[1] = "5";
array.name = "牙刷";
array.price = 5;
biao1++;
Console.Write("您选择的是牙刷，请问您需要多少支？");
break;
case 3:
//array[0] = "可口可乐";
//array[1] = "3";
array.name = "可口可乐";
array.price = 3;
biao1++;
Console.Write("您选择的是可口可乐，请问您需要多少瓶？");
break;
case 4:
//array[0] = "水杯";
//array[1] = "12";
array.name = "水杯";
array.price = 12;
biao1++;
Console.Write("您选择的是水杯，请问您需要多少个？");
break;
case 5:
//array[0] = "毛巾";
//array[1] = "6";
array.name = "毛巾";
array.price = 6;
biao1++;
Console.Write("您选择的是毛巾，请问您需要多少块？");
break;
case 6:
if (biao1 == 0)
{
Console.Clear();
Console.WriteLine("您什么也没有购买，您已经走出了超市。。。");
j = 1;
i = 1;
}
else
{
double zong = 0;
for (int k = 0; k < al.Count; k++)
{
//string[] yigou = (string[])al[k];
Shop yigou = (Shop)al[k];
//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])));
Console.WriteLine("您选择了{0}，单价为{1}元，数量为{2}，单品总价：{3}。", yigou.name, yigou.price, yigou.shuliang, yigou.price*yigou.shuliang);
//zong += int.Parse(yigou[1]) * int.Parse(yigou[2]);
zong += yigou.price * yigou.shuliang;
}
Console.Write("总价：" + zong + "元。请缴费：");
double erjiao = 0;
for (int l = 0; l == 0; )
{
double jiao = double.Parse(Console.ReadLine());
jiao += erjiao;
if (jiao >= zong)
{
Console.WriteLine("交易成功，交易时间为：" + DateTime.Now);
Console.WriteLine("找零：" + (jiao - zong) + "元。");
Console.WriteLine("谢谢惠顾！再见！");
l = 1;
j = 1;
i = 1;
}
else
{
erjiao = jiao;
Console.Write("缴费金额不足，请继续缴费：");
}
}
}
break;
default:
Console.WriteLine("查无此商品！请按回车键继续选择商品！");
Console.ReadLine();
biaocuo = false;
break;
}
if (i == 0 && j == 0 && biaocuo == true)
{
//array[2] = Console.ReadLine();
array.shuliang = int.Parse(Console.ReadLine());
//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]);
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.name, array.price, array.shuliang);
al.Add(array);
Console.ReadLine();
}
}
}
else if (aa == 6)
{
Console.Clear();
Console.WriteLine("您什么也没有购买！您已走出超市。。。");
i = 1;
}
else
{
Console.Write("输入有误！请重新输入：");
}
}
Anaylist方法
4.用结构体做
namespace 结构体
{
class Program
{
struct Student
{
public int xuehao;
public string name;
public string sex;
public double score;
}
//struct Student
//{
// public int xuehao;
// public string name;
// public string sex;
// public Score score;
//}
//struct Score
//{
// public double yufen;
// public double shufen;
// public double yingfen;
//}
//struct Shop
//{
// public string name;
// public double price;
// public int shuliang;
//}
static void Main(string[] args)
{
ArrayList al = new ArrayList();
Console.Write("请输入班级人数：");
int a = int.Parse(Console.ReadLine());
for (int i = 0; i < a; i++)
{
Student sst = new Student();
Console.Write("请输入第{0}个学生的学号：", (i + 1));
sst.xuehao = int.Parse(Console.ReadLine());
Console.Write("请输入第{0}个学生的姓名：", (i + 1));
sst.name = Console.ReadLine();
Console.Write("请输入第{0}个学生的性别：", (i + 1));
sst.sex = Console.ReadLine();
Console.Write("请输入第{0}个学生的分数：", (i + 1));
sst.score = double.Parse(Console.ReadLine());
al.Add(sst);
}
Console.WriteLine("所有人员信息输入完毕！请按回车键开始打印！");
Console.ReadLine();
for (int i = 0; i < al.Count; i++)
{
Student sst = (Student)al[i];
Console.WriteLine("第{0}个学生的学号是：{1}，姓名是{2}，性别是{3}，分数是{4}。", (i + 1), sst.xuehao, sst.name, sst.sex, sst.score);
}
stract例题
时间： 2024-10-23 23:57:27