我在程序中数学有问题
本文关键字：有问题 程序 | 更新日期: 2023-09-27 17:58:25
当我对论坛进行编程时，我在区分csv文件上的两位信息时遇到了问题。
问题是：如果有两个成年人想去一个价格较低的地方然而，如果是单身成年人，价格会更高。
问题：出现的问题是，我的所有细分市场都认为所有成年人都应该收取更少的费用，而一些交易费用应该显示更多。
准确地说，信息：包含HolidayTran.CSV的文件具有数组[3]，其中包含聚会中1或2名成年人的信息。
当我携带功能参考双成年人是我携带到顶部。
编辑-这是我所在大学的教授想要的方法。。。是的，又慢又笨，但这是他的练习决赛，所以我想弄清楚我错过了什么。是我知道我应该自己做工作，但我希望有人能告诉我编程中我的数学哪里错了。
已编辑#2更改了变量以使其更加清晰。我发现了一个孤立的问题，位于方程的If循环部分。它一直在把所有的东西都乘以两位数，而不是1。如何创建一个函数，如果消息读取的是1或2，则应用正确的数学运算？
AdultPricing这个函数应该选择正确的数学，但我往往不知道如何正确地完成函数。如果你看看If循环，你可以看到我哪里错了。。。有什么想法吗？
我正在尝试做一个if语句布尔函数，但目前不起作用。。。我不知道atm还需要什么。。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
string[] myfile = File.ReadAllLines(@"C:'temp'customerinfo.csv");
var myquery = from mylines in myfile
let myfield = mylines.Split(',')
let names = myfield[1]
let lastname = myfield[2]
let id = myfield[0]
orderby lastname, names
select new { id, names, lastname };
foreach (var listing in myquery) { cmbcustomerinfo.Items.Add(listing.id + " " + listing.names + " " + listing.lastname); }
}
private void cmbcustomerinfo_SelectedIndexChanged(object sender, EventArgs e)
{
//recalling all private void information at the top of the combobox file, inorder to send information to the listbox.
string tempvariable = "";
string iddvariable = "";
string format1 = "{0,55}{1,5}";
string format2 = "{0,-5:d}{1,15:d}{2,20:c}{3,20:c}";
string format3 = "{0,-15}{1,35:c}{2,20:c}";
string format4 = "{0,-15}{1,72:c}";
getCustomerIDFirstName(out tempvariable, out iddvariable);
getcustomerinfo(iddvariable);
//set the required information to connect to the Holiday Transaction. Where we can connect if the ID found in Holiday Matchs the ID in CustomerInfo.CSV,
//then we can show the data of the dates and pricing of the information
string[] transaction = File.ReadAllLines(@"C:'temp'HolidayTrans.csv");
var TransactionQuery = from myLinesshown in transaction
let myfield2 = myLinesshown.Split(',')
let customerid = myfield2[0]
let datestart = myfield2[1]
let numofadults = byte.Parse(myfield2[2])
let numofkids = byte.Parse(myfield2[3])
where customerid == iddvariable
orderby datestart, customerid
select new
{
customerid,
datestart,
numofadults,
numofkids
};
foreach (var staff1 in TransactionQuery)
{
lstInvoice.Items.Clear();
lstInvoice.Items.Add("Purchase Date EndDate Adult Price Kid Price");
//set up all variables used or to be used.
string idgiven = "";
double KidsSubPricing = 0;
double AdultPricing = 0;
double singleddigit = 0;
double TwinAdultPricing = 0;
double totaladult = 0;
double subtotal = 0;
double subtotal1 = 0;
double kidpricing = 3300;
byte NumberOfDaysSpent = 0;
string EndofDays = "";
DateTime daybegin;
DateTime startthedate;
DateTime datebeginning = DateTime.Now;
//set the basic functionality to find the proper ID and date to be shown that corresponses to the person.
foreach (var transactionfound in TransactionQuery)
{
idgiven = transactionfound.customerid;
datebeginning = DateTime.Parse(transactionfound.datestart);
break;
}
//set the datetime interval to show the proper grouping later on
int xyy = datebeginning.Year;
//This is suppose to show where and how I can seperate the transaction of single and double pricing.
foreach (var transactionfound in TransactionQuery)
{
if (transactionfound.numofadults.ToString().Contains("1"))
{
singleddigit = transactionfound.numofadults;
}
if (transactionfound.numofadults.ToString().Contains("2"))
{
TwinAdultPricing = transactionfound.numofadults;
}
if (transactionfound.customerid == idgiven && DateTime.Parse(transactionfound.datestart).Year == xyy)
{
getpackagepriceinfo(transactionfound.datestart,ref singleddigit, ref TwinAdultPricing, ref NumberOfDaysSpent);
KidsSubPricing = transactionfound.numofkids * kidpricing;
//AdultPricing = transactionfound.numofadults * TwinAdultPricing;
subtotal += KidsSubPricing;
subtotal1 += AdultPricing;
daybegin = DateTime.Parse(transactionfound.datestart);
startthedate = daybegin.AddDays(NumberOfDaysSpent);
EndofDays = startthedate.ToString("d");
lstInvoice.Items.Add(string.Format(format2, daybegin, EndofDays, AdultPricing, KidsSubPricing));
}
else
{
lstInvoice.Items.Add(string.Format(format3, "Subtotal Amount",subtotal1, subtotal));
lstInvoice.Items.Add(" ");
getpackagepriceinfo(transactionfound.datestart,ref singleddigit, ref TwinAdultPricing, ref NumberOfDaysSpent);
KidsSubPricing = transactionfound.numofkids * kidpricing;
//AdultPricing = transactionfound.numofadults * singleddigit;
subtotal += KidsSubPricing;
subtotal1 += AdultPricing;
daybegin = DateTime.Parse(transactionfound.datestart);
startthedate = daybegin.AddDays(NumberOfDaysSpent);
EndofDays = startthedate.ToString("d");
lstInvoice.Items.Add(string.Format(format2, daybegin, EndofDays, AdultPricing, KidsSubPricing));
idgiven = transactionfound.customerid;
xyy = DateTime.Parse(transactionfound.datestart).Year;
}
if (idgiven == "")
{
lstInvoice.Items.Clear();
lstInvoice.Items.Add(string.Format(format1, "Sorry no Transaction Found For" + " ", tempvariable));
}
//else
//{
// lstInvoice.Items.Add(string.Format(format3, "Subtotal Amount", subtotal1, subtotal));
// lstInvoice.Items.Add("");
//}
}lstInvoice.Items.Add(string.Format(format3, "Subtotal Amount", subtotal1, subtotal));
}
}
private void getCustomerIDFirstName(out string tempp, out string idd)
{
string[] temp = cmbcustomerinfo.SelectedItem.ToString().Split(' ');
tempp = temp[1];
idd = temp[0];
}
private void getpackagepriceinfo(string date, ref double CostPerSingleAdult, ref double CostPerTwoAdults, ref byte numofdays1)
{
//set the information here, so we can recall the csv file into the main program.
string[] production = File.ReadAllLines(@"C:'temp'PackagePrice.csv");
var productQuery = from myLinesshown in production
let myfield1 = myLinesshown.Split(',')
let numofdays = byte.Parse(myfield1[0])
let startdateshown = myfield1[1]
let twinadult = myfield1[2]
let singlepricing = myfield1[3]
where startdateshown == date
select new
{
numofdays,
startdateshown,
twinadult,
singlepricing
};
//setting the factor of the private function doubles and bytes to be able to get recalled, back to the top.
foreach (var xyz in productQuery)
{
numofdays1 = xyz.numofdays;
CostPerTwoAdults = double.Parse(xyz.twinadult);
CostPerSingleAdult = double.Parse(xyz.singlepricing);
date = xyz.startdateshown;
break;
}
}
//redo the customer information, so we can recall the string of customer id inorder to recall proper functionality.
private void getcustomerinfo(string customerid){
string[] myfile = File.ReadAllLines(@"C:'temp'customerinfo.csv");
var myquery = from mylines in myfile
let myfield = mylines.Split(',')
let names = myfield[1]
let lastname = myfield[2]
let id = myfield[0]
where id == customerid
select new { id, names, lastname};}
}
}
修复变量名。
将代码重构为更小、更整洁的方法。
问题变得很多更清晰的
您有一个名为getpackagepriceinfo的方法，它采用参数
(string date, ref double adult, ref double single12, ref byte numofdays1)
其中成人为costPerSingleAdult，单身12为costPerTwoAdults
调用此方法时，已将变量singleddigit传递给现已重命名的参数costPerTwoAdults。这到底意味着什么？您是否意识到您没有在代码中使用此变量
把代码的清晰度放在首位。当代码易于理解且工作正常时，您可以开始重写部分，以提高速度/内存/降低LoC/实验语言功能/其他任何原因，当您这样做时，请写一条注释，显示代码的初衷，以便在新代码中写入错误时，您能够快速找到它。
编辑后这绝对是一个进步。现在你可以看到，你已经得到了每笔交易的成年人数量，但你已经将这个数字分配到了用于定价的变量中。我认为你需要参考规范，我读到"如果有两个成年人和两个成年人的价格，那么收取双胞胎价格。否则，如果没有两个成年人价格，则收取2*单个成年人价格，否则收取成人价格"，你的代码应该读到相同的内容。
Decimal adultPrice
if ( twoAdults && twinPrice > 0)
adultPrice = twinPrice;
else if ( twoAdults )
adultPrice = 2 * singlePrice;
else
adultPrice = singlePrice;
请注意，如果有两个以上的成年人，这将不起作用。不确定是否符合规范
SO新的编码如下。多亏了James Barrass，我才能够正确地修复编码。问题是以下
numberAdults = byte.Parse(Transaction.NumberofAdults);
if(numberAdults == 2)
adultpricing = AdultCost*2;
else
adultpricing = CostSingle;
因为下面的代码上面的整个编码现在能够正常工作了。
private void Form1_Load(object sender, EventArgs e)
{
string[] myfile = File.ReadAllLines(@"C:'temp'customerinfo.csv");
var myQuery = from mylines in myfile
let myfield = mylines.Split(',')
let CustomerID = myfield[0]
let CustomerFirstName = myfield[1]
let CustomerLastName = myfield[2]
orderby CustomerID, CustomerLastName, CustomerFirstName
select new {
CustomerID, CustomerFirstName, CustomerLastName
};
foreach (var customerinfo in myQuery) { cmbCustomer.Items.Add(customerinfo.CustomerID + " " + customerinfo.CustomerFirstName + " " + customerinfo.CustomerLastName); }
}
private void getCustomerFirstandID(out string customerfirst, out string idd)
{
string[] tempp = cmbCustomer.SelectedItem.ToString().Split(' ');
customerfirst = tempp[1];
idd = tempp[0];
}
private void getCustomerInfo(string StatedID)
{
string[] myfile = File.ReadAllLines(@"C:'temp'customerinfo.csv");
var myQuery = from mylines in myfile
let myfield = mylines.Split(',')
let CustomerID = myfield[0]
let CustomerFirstName = myfield[1]
let CustomerLastName = myfield[2]
where CustomerID == StatedID
select new
{
CustomerID,
CustomerFirstName,
CustomerLastName
};
}
private void getPackagePriceInfo(DateTime date, ref double CostofAdults, ref double CostofSingle, ref byte NumberofDaysShown)
{
string[] myGivenFile = File.ReadAllLines(@"C:'temp'PackagePrice.csv");
var myPackageTransaction = from myLinesGiven in myGivenFile
let myFieldShown = myLinesGiven.Split(',')
let NumberofDays = myFieldShown[0]
let StartDate = DateTime.Parse(myFieldShown[1])
let TwinAdult = myFieldShown[2]
let SingleAdult = myFieldShown[3]
where StartDate == date
select new {
NumberofDays, StartDate, TwinAdult, SingleAdult
};
foreach (var Package in myPackageTransaction) {
CostofSingle = double.Parse(Package.SingleAdult);
CostofAdults = double.Parse(Package.TwinAdult);
NumberofDaysShown = byte.Parse(Package.NumberofDays);
date = Package.StartDate;
break;
}
}
private void cmbCustomer_SelectedIndexChanged(object sender, EventArgs e)
{
string customerfirstvariable = "";
string iddvariable = "";
getCustomerFirstandID(out customerfirstvariable, out iddvariable);
getCustomerInfo(iddvariable);
string format1 = "{0,55}{1,5}";
string format2 = "{0,-5:d}{1,15:d}{2,20:c}{3,20:c}";
string format3 = "{0,25}{1,19:c}{2,20:c}";
string format4 = "{0,-15}{1,72:c}";
string[] myGivenFile1 = File.ReadAllLines(@"C:'temp'holidaytrans.csv");
var myHolidayTransaction = from myLinesGiven1 in myGivenFile1
let myFieldShown = myLinesGiven1.Split(',')
let CustomerGivenID = myFieldShown[0]
let PackageStartDate = DateTime.Parse(myFieldShown[1])
let NumberofAdults = myFieldShown[2]
let NumberofKids = myFieldShown[3]
where CustomerGivenID == iddvariable
orderby PackageStartDate
select new
{
CustomerGivenID, PackageStartDate, NumberofAdults, NumberofKids
};
lstInvoice.Items.Clear();
// foreach (var transactionfound in myHolidayTransaction) {
//set up all variables used or to be used.
string EndofDays = "";
DateTime daybegin;
DateTime startthedate;
DateTime datebeginning = DateTime.Now;
string idgiven = "";
double AdultCost = 0;
byte DaysUsed = 0;
double adultpricing = 0;
double KidsPricing = 0;
double KidsCost = 3300;
double subtotal = 0;
double totalamt = 0;
double subtotal1 = 0;
double total1 = 0;
double total = 0;
double CostSingle = 0;
byte numberAdults = 0;
double adultgiven = 0;
int xyz = 0;
foreach (var Transaction in myHolidayTransaction)
{
idgiven = Transaction.CustomerGivenID;
lstInvoice.Items.Add("Purchase Date EndDate Adult Price Kid Price");
datebeginning = Transaction.PackageStartDate;
xyz = datebeginning.Year;
break;
}
foreach (var Transaction in myHolidayTransaction)
{
if (Transaction.PackageStartDate.Year == xyz) {
getPackagePriceInfo(Transaction.PackageStartDate,ref AdultCost, ref CostSingle, ref DaysUsed);
KidsPricing = KidsCost * byte.Parse(Transaction.NumberofKids);
numberAdults = byte.Parse(Transaction.NumberofAdults);
if(numberAdults == 2)
adultpricing = AdultCost*2;
else
adultpricing = CostSingle;
subtotal += KidsPricing;
subtotal1 += adultpricing;
total += KidsPricing;
total1 += adultpricing;
daybegin = Transaction.PackageStartDate;
startthedate = daybegin.AddDays(DaysUsed);
EndofDays = startthedate.ToString("d");
lstInvoice.Items.Add(string.Format(format2, startthedate, EndofDays, adultpricing, KidsPricing));}
else
{
lstInvoice.Items.Add(string.Format(format3, "Subtotal Amount", subtotal1, subtotal));
lstInvoice.Items.Add(" ");
getPackagePriceInfo(Transaction.PackageStartDate, ref AdultCost, ref CostSingle, ref DaysUsed);
KidsPricing = KidsCost * byte.Parse(Transaction.NumberofKids);
numberAdults = byte.Parse(Transaction.NumberofAdults);
if (numberAdults == 2)
adultpricing = AdultCost * 2;
else
adultpricing = CostSingle;
subtotal = KidsPricing;
subtotal1 = adultpricing;
total += KidsPricing;
total1 += adultpricing;
daybegin =Transaction.PackageStartDate;
startthedate = daybegin.AddDays(DaysUsed);
EndofDays = startthedate.ToString("d");
lstInvoice.Items.Add(string.Format(format2, startthedate, EndofDays, adultpricing, KidsPricing));
idgiven = Transaction.CustomerGivenID;
xyz = Transaction.PackageStartDate.Year;
}}
if (idgiven == "")
{
lstInvoice.Items.Clear();
lstInvoice.Items.Add(string.Format(format1, "Sorry no Transaction Found For" + " ", customerfirstvariable));
}
else
lstInvoice.Items.Add(" ");
lstInvoice.Items.Add(string.Format(format3, "Subtotal Amount", subtotal1, subtotal));
lstInvoice.Items.Add(" ");
lstInvoice.Items.Add(string.Format(format3, "Total Amount", total1, total));
}
}
}