VS2019(c#) 自动售货机
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思路
假设售货机只有一种商品，价格为8$；
首先自动售货机会显示价格，余额，总消费，可购买食品数量，已购买的食品数量…等。
其次是向自动售货机输入相关动作，充值，选择购买数量…等。 -
初始化
新建售货机相关变量并声明赋值。
public int price = 8;//假设售货机只有一类商品
public double balance=0.0;
public int canTimes,buyTimes;
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整理方法
新建1）关于余额的相关展示及操作的方法inShow();
新建2）展示可购买数量的方法times(double balance);
新建3）关于购买数量的方法wantBuy();
新建4）Main整合上述方法，实现完整自动售货机的功能。 -
inShow()方法
c#中要进行键盘输入的话，就要有Convert.ToDouble(Console.ReadLine());
ToDouble可根据输入格式更改，还有：ToString,ToInt32…等。
新建的double型变量t是为了对键入的balance进行替换后相加；，
for循环是为了进行balance与price的判定动作，键入balance总额<price则一直进行的循环，以及为了后续退出循环操作的break和continue操作；
public double inShow()
{
double t = balance;
Console.WriteLine("your balance is:{0}", balance);
Console.WriteLine("plesea enter your money:");
balance = Convert.ToDouble(Console.ReadLine());
balance = t + balance;
for (int i =0; ; i++)
{
double t1 = balance;
if (balance < price)
{
Console.Write("your balance was not enough,enter again:");
balance = Convert.ToDouble(Console.ReadLine());
balance = t1 + balance;
if (balance>price)
{
Console.WriteLine("balance is enough:{0}", balance);
break;
}
continue;
}
else
{
Console.WriteLine("balance is enough:{0}", balance);
break;
}
}
return balance;
}
- times(double balance)方法
该方法拥有一个参数，即inShow()方法返回的最终值balance，
向该方法传入balance的参数，进行计算得到能够购买食品数量的值，
因为balance是double型的，与int型不能进行计算，所以，对它进行强制转换（int）。
public int times(double balance)
{
int t = (int)balance;
canTimes = t / price;
Console.WriteLine("you can buy this food {0} times", canTimes);
return canTimes;
}
- wantBuy()方法
for循环同上，读下print易知其操作功能（我英语不好，看懂大概就行了QAQ）
public int wantBuy()
{
for(int i =0; ; i++)
{
Console.WriteLine("please enter you want buyTimes:");
buyTimes = Convert.ToInt32(Console.ReadLine());
if (buyTimes <= canTimes)
{
Console.WriteLine("you buy this food {0} times", buyTimes);
balance = balance - price * buyTimes;
Console.WriteLine("now you have {0} doller", balance);break;
}
else
{
Console.WriteLine("your money is not enough,please enter following {0} times", canTimes+1);
break;
}
}
return buyTimes;
}
-
Main整合
新建对象Class1 c1 = new Class1();
先调用inShow()方法，然后就是再写一个switch循环询问是否要再次进行充值动作，
其次就是调用times(double balance)方法以及wanBuy()方法。
顺序完成一个自动售货机的基础功能。
static void Main(string[] args)
{
Class1 c1 = new Class1();
c1.inShow();
Console.WriteLine("would you want to enter one more time for recharge more money? enter 'yes' continue recharge,enter 'no' out");
string word = Convert.ToString(Console.ReadLine());
switch (word)
{
case "yes":
c1.inShow(); break;
case "no":
break;
default:
Console.WriteLine("enter error!");
break;
}
double a = c1.balance;
c1.times(a);
c1.wantBuy();
Console.WriteLine("thank you for your patronage!");
Console.WriteLine("you buy the food for {0}$", c1.price * c1.buyTimes);
Console.ReadKey();
}
- 完整代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
/**zohing原创**/
namespace Project1
{
public class Class1
{
//自动售货机
public int price = 8;//假设售货机只有一类商品
public double balance=0.0;
public int canTimes,buyTimes;
public double inShow()
{
double t = balance;
Console.WriteLine("your balance is:{0}", balance);
Console.WriteLine("plesea enter your money:");
balance = Convert.ToDouble(Console.ReadLine());
balance = t + balance;
for (int i =0; ; i++)
{
double t1 = balance;
if (balance < price)
{
Console.Write("your balance was not enough,enter again:");
balance = Convert.ToDouble(Console.ReadLine());
balance = t1 + balance;
if (balance>price)
{
Console.WriteLine("balance is enough:{0}", balance);
break;
}
continue;
}
else
{
Console.WriteLine("balance is enough:{0}", balance);
break;
}
}
return balance;
}
public int times(double balance)
{
int t = (int)balance;
canTimes = t / price;
Console.WriteLine("you can buy this food {0} times", canTimes);
return canTimes;
}
public int wantBuy()
{
for(int i =0; ; i++)
{
Console.WriteLine("please enter you want buyTimes:");
buyTimes = Convert.ToInt32(Console.ReadLine());
if (buyTimes <= canTimes)
{
Console.WriteLine("you buy this food {0} times", buyTimes);
balance = balance - price * buyTimes;
Console.WriteLine("now you have {0} doller", balance);break;
}
else
{
Console.WriteLine("your money is not enough,please enter following {0} times", canTimes+1);
break;
}
}
return buyTimes;
}
static void Main(string[] args)
{
Class1 c1 = new Class1();
c1.inShow();
Console.WriteLine("would you want to enter one more time for recharge more money? enter 'yes' continue recharge,enter 'no' out");
string word = Convert.ToString(Console.ReadLine());
switch (word)
{
case "yes":
c1.inShow(); break;
case "no":
break;
default:
Console.WriteLine("enter error!");
break;
}
double a = c1.balance;
c1.times(a);
c1.wantBuy();
Console.WriteLine("thank you for your patronage!");
Console.WriteLine("you buy the food for {0}$", c1.price * c1.buyTimes);
Console.ReadKey();
}
}
}
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测试
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提示
读下print易知其操作功能（我英语不好，看懂大概就行了QAQ）
代码还可以继续增添功能及优化，不好的地方恳请指正，
一起加油，让我们一起冲冲冲！！！