读取一个txt文件，拆分字符串然后写入txt文件
本文关键字：文件 txt 字符串 拆分 然后 一个 读取 | 更新日期: 2023-09-27 18:14:50
我有一个叫杂货的文本文件。包含类似于以下内容的文本:
regular,cereal,4.00,1;
fresh,rump steak,11.99,0.8;
下面的代码试图读取文本文件，分割字符串，然后写入一个名为invoice的文本文件。发票文本文件应在杂货文件中读取读取行，列出它是"新鲜"还是"常规"杂货项目。如果新商品及服务税不适用，如果常规商品及服务税适用。计算新鲜的重量成本和常规的数量成本，然后显示列出的项目的总成本。如有任何帮助，不胜感激。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace Groceries3
{
class Program
{
static void Main(string[] args)
{
string[] groceries = File.ReadAllLines ("Groceries.txt");
File.WriteAllLines("Invoice.txt", invoices.ToArray());
List<string> invoices = new List<string>();
FreshGrocery freshGrocery = new FreshGrocery();
freshGrocery.Name = "fresh";
freshGrocery.Price = 30;
freshGrocery.Weight = 0.5;
Grocery grocery = new Grocery();
grocery.Name = "regular";
grocery.Price = 50;
grocery.Quantity = 2;
double price = price.Calculate();
int counter = 0;
foreach (var grocery2 in groceries)
{
counter++;
invoices.Add(counter + "," + grocery + price+Quantity+"," + DateTime.Now.Date);
}
abstract class GroceryItem
{
private string name;
private double price = 0;
public string Name
{
get
{
return name;
}
set
{
name = value;
}
}
public double Price
{
get
{
return price;
}
set
{
price = value;
}
}
public abstract double Calculate();
}
class FreshGrocery : GroceryItem
{
private double weight = 0;
public double Weight
{
get
{
return weight;
}
set
{
weight = value;
}
}
public override double Calculate()
{
return this.Price * this.weight;
}
}
class Grocery : GroceryItem
{
private int quantity = 0;
private double gst = 10;
public int Quantity
{
get
{
return quantity;
}
set
{
quantity = value;
}
}
public override double Calculate()
{
double calculatedPrice = this.Price * this.Quantity;
if (calculatedPrice < 0)
{
calculatedPrice += calculatedPrice * (gst / 100);
}
return calculatedPrice;
}
}
class ShoppingCart
{
private List<GroceryItem> orders;
public List<GroceryItem> Orders
{
get
{
return orders;
}
set
{
orders = value;
}
}
public double Calculate()
{
double price = 0;
if (this.Orders != null)
{
foreach (GroceryItem order in this.Orders)
{
price += order.Calculate();
}
}
return price;
}
}
}
试试这样做
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Groceries3
{
class Program
{
static void Main(string[] args)
{
string[] groceries = File.ReadAllLines("Groceries.txt");
List<string> invoices = new List<string>();
int counter = 0;
foreach (var grocery2 in groceries)
{
counter++;
var list = grocery2.Split(',');
if (list[0].Equals("fresh"))
{
FreshGrocery freshGrocery = new FreshGrocery();
freshGrocery.Name = list[1];
freshGrocery.Price = double.Parse(list[2]);
freshGrocery.Weight = double.Parse(list[3].Replace(";", ""));
invoices.Add(counter + "," + freshGrocery.Name + "," + freshGrocery.Price + "," + freshGrocery.Weight + "," + DateTime.Now.Date);
}
else if (list[0].Equals("regular"))
{
Grocery grocery = new Grocery();
grocery.Name = list[1];
grocery.Price = double.Parse(list[2]);
grocery.Quantity = int.Parse(list[3].Replace(";", ""));
double price = grocery.Calculate();
invoices.Add(counter + "," + grocery.Name + "," + price + "," + grocery.Quantity + "," + DateTime.Now.Date);
}
}
File.WriteAllLines("Invoice.txt", invoices.ToArray());
}
abstract class GroceryItem
{
private string name;
private double price = 0;
public string Name
{
get
{
return name;
}
set
{
name = value;
}
}
public double Price
{
get
{
return price;
}
set
{
price = value;
}
}
public abstract double Calculate();
}
class FreshGrocery : GroceryItem
{
private double weight = 0;
public double Weight
{
get
{
return weight;
}
set
{
weight = value;
}
}
public override double Calculate()
{
return this.Price * this.weight;
}
}
class Grocery : GroceryItem
{
private int quantity = 0;
private double gst = 10;
public int Quantity
{
get
{
return quantity;
}
set
{
quantity = value;
}
}
public override double Calculate()
{
double calculatedPrice = this.Price * this.Quantity;
if (calculatedPrice < 0)
{
calculatedPrice += calculatedPrice * (gst / 100);
}
return calculatedPrice;
}
}
class ShoppingCart
{
private List<GroceryItem> orders;
public List<GroceryItem> Orders
{
get
{
return orders;
}
set
{
orders = value;
}
}
public double Calculate()
{
double price = 0;
if (this.Orders != null)
{
foreach (GroceryItem order in this.Orders)
{
price += order.Calculate();
}
}
return price;
}
}
}
}