您好我的项目有很多csv文件。它与Datafolder/IAG/day1.csv, Datafolder/IAG/day2.csv and Datafolder/IAG/day3.csv位于同一目录中。 Datafolder/CBA/day1.csv, Datafolder/CBA/day2.csv and Datafolder/CBA/day3.csv和Datafolder/NAB/day1.csv, Datafolder/NAB/day2.csv and Datafolder/NAB/day3.csv也是如此。
我的目标是用户可以输入他们想要和输入的那一天的数据。一旦输入，它将要求用户输入1（获得最高价格值）或2（最低价格值）。但在我的代码中，我不知道为什么一旦用户选择了当天并获得最高价格，它就会被存储为该值。即使用户选择另一天并寻找最高价格，它实际上并不显示当天的最高值，而是前一天的最高值再次复制以下是代码。先谢谢你们。
#include <iostream>
#include <string>
#include <iomanip>
#include <fstream>
#include "vector.h"
#include "stock.h"
#include <map>
using namespace std;
int counter = 0;
double highestPrice=0, lowestPrice=0;
ofstream outfile;
string sFileName;
string record;
Stock S1;
Vector<Stock> data;
int option;
ifstream codeindex;
ifstream IAGsales;
ifstream CBAsales;
ifstream NABsales;
ifstream* Tempsales = 0;
ifstream infile;
map<string,Vector<Stock>> mapIAG;
map<string,Vector<Stock>> mapCBA;
map<string,Vector<Stock>> mapNAB;
map<string,Vector<Stock>> mapTemp;
map<string,Vector<Stock>>::iterator it;
double price1, price2;
Time time1, time2;
Date date1;
string sXCode,sInputDate;
int main()
{
void initializing();
codeindex.open("Datafolder/code_index.txt");
if(! codeindex)
{
cout << codeindex <<" : File not found!!" << endl;
system("PAUSE");
exit(1);
}
do
{
initializing();
time1.initialize();
highestPrice = (data.getvalue(0)).getprice();//Initialise highest price
lowestPrice=0;
lowestPrice = (data.getvalue(0)).getprice();//Initialise lowest price
(data.getvalue(0)).gettime(time1, data.getvalue(0));//Initialise time1
switch (option)
{
case 1:
{
Date datehigh;
for(int i = 1 ; i < counter ; i ++)
{
if((data.getvalue(i)).getprice() > highestPrice)
{
highestPrice = (data.getvalue(i)).getprice();
(data.getvalue(i)).gettime(time1, data.getvalue(i));//get the time when highest price first occurred
(data.getvalue(i)).getdate(datehigh, data.getvalue(i));
}
}
cout << "Date: " << datehigh << endl;
cout << "Highest price : " << highestPrice << endl;
cout << "Start time(s): " << endl;
cout << time1 ;
for(int i = 0 ; i < counter ; i ++)
{
if( (data.getvalue(i)).getprice() == highestPrice)
{
(data.getvalue(i)).gettime(time2, data.getvalue(i));//get the time when highest price occurred
if(time2 != time1)//avoid duplicated time
{
(data.getvalue(i)).printtime();
(data.getvalue(i)).gettime(time1, data.getvalue(i));
//(data.getvalue(i)).getdate(datehigh, data.getvalue(i));
}
}//End of if( (data.get(i)).getprice() == highestPrice)
}//End of for(int i = 0 ; i < count ; i ++)
//main();
//initialize();
//(data.getvalue(0)).printdate();
break;
}
case 2:
{
Date datelow;
for(int i = 1 ; i < counter ; i ++)
{
if(((data.getvalue(i)).getprice() < lowestPrice) && ((data.getvalue(i)).getprice() > 0))
{
lowestPrice = (data.getvalue(i)).getprice();
(data.getvalue(i)).gettime(time1, data.getvalue(i));//get the time when lowest price first occurred
(data.getvalue(i)).getdate(datelow, data.getvalue(i));
}
}
int j =0;
//(data.getvalue(j)).printdate();
cout << "Date: " << datelow << endl;
cout << "Lowest price: " << lowestPrice << endl;
cout << "Start time(s): " << endl;
cout << time1<<endl;
for(int i = 0 ; i < counter ; i ++)
{
if( (data.getvalue(i)).getprice() == lowestPrice)
{
(data.getvalue(i)).gettime(time2, data.getvalue(i));//get the time when highest price occurred
if(time2 != time1)//avoid duplicated time
{
(data.getvalue(i)).printtime();
(data.getvalue(i)).gettime(time1, data.getvalue(i));
}
}//End of if( (data.get(i)).getprice() == lowestPrice)
}//End of for(int i = 0 ; i < count ; i ++)
//main();
//initialize();
break;
}
case 3:
{
outfile.open("output.csv");
if(! outfile)
{
cout << "Can not open outfile" << endl;
exit(1);
}
cout << "Data processing" << endl;
outfile << fixed << showpoint << setprecision(2);
outfile << "Date,Start time,Price of share,Volume of shares traded,Total value of shares traded" << endl;
price1 = data.getvalue(counter-1).getprice();//get price for the last row
double nVolumeOfTrades = data.getvalue(counter-1).getvolume();
double ntotalValueOfShares = data.getvalue(counter-1).getvalue();
// Get Date of trading
data.getvalue(counter-1).getdate(date1,data.getvalue(counter-1));
// Get Start time
data.getvalue(counter-1).gettime(time1,data.getvalue(counter-1));
for(int i = counter-2; i > -1 ; i --)
{
price2 = data.getvalue(i).getprice();
if(price2 != 0 && price1 != price2)
{
// Write values to file.
outfile << date1 << "," << time1 << "," << price1 << "," << nVolumeOfTrades << "," << ntotalValueOfShares << endl;
// Get Date of trading
data.getvalue(i).getdate(date1,data.getvalue(i));
// Get Start time
data.getvalue(i).gettime(time1,data.getvalue(i));
price1 = data.getvalue(i).getprice();
nVolumeOfTrades = 0;
ntotalValueOfShares = 0;
}
nVolumeOfTrades += data.getvalue(i).getvolume();
ntotalValueOfShares += data.getvalue(i).getvalue();
}
cout << "Data processed" << endl;
outfile.close();
//initialize();
//main();
break;
}
case 4:
{
break;
}
default:
{
cout << "Invalid option" << endl;
cout<<"Choose from options 1 to 4: "<<endl;
cout << "Enter 1 to get the highest stock price & time:" << endl;
cout << "Enter 2 to get the lowest stock price & time:" << endl;
cout << "Enter 3 to output the csv file: " << endl;
cout << "Enter 4 to exit from the program:" << endl;
cin >> option;
break;
}
}
if(option==4)
{
break;
}
cout << "\n\n" << endl;
}
while(1);
return 0;
}
void initializing()
{
// Present the user with Input options
cout<<"Enter the code of transaction:" <<endl;
while(! codeindex.eof()){
getline(codeindex,record);
cout<<record<<endl;
}
cin>>sXCode;
codeindex.clear();
codeindex.seekg(0,ios::beg);
while(sXCode!="IAG" && sXCode!="CBA" && sXCode!="NAB"){
cout<<"Wrong input .. Please enter again \n";
cin>>sXCode;
}
// Get code file name.
if(sXCode=="IAG")
{
if(IAGsales.is_open()==true){
IAGsales.close();
}
IAGsales.open("Datafolder/IAG/sales_index.txt");
if(!IAGsales)
{
cout << IAGsales<<" :File not found!!" << endl;
system("PAUSE");
exit(1);
}
// Read IAG file names.
while(!IAGsales.eof())
{
getline(IAGsales, sFileName);
if(sFileName.size() > 0)
{ //cout<<"before: "<< sFilePath <<endl;
string sFilePath = "Datafolder/IAG/";
sFilePath = sFilePath.append(sFileName);
cout<<"after append: "<< sFilePath <<endl;
// Read the csv file
infile.open(sFilePath);
if(! infile)
{
cout << sFileName<<": File not found!!" << endl;
exit(1);
}
getline(infile, record);//first line
getline(infile, record);//second line
while(! infile.eof())
{
getline(infile, record);
if(record.size() > 0)
{
S1.readfile(record, S1);
data.insert(S1);
counter ++;
}
}//while(! infile.eof())
infile.close();
// Insert to Map
mapIAG.insert(pair<string,Vector<Stock>>(sFileName,data));
}
}
IAGsales.clear();
IAGsales.seekg(0,ios::beg);
Tempsales = &IAGsales;
//cout<<"test1";
//IAGsales.close();
}
else if(sXCode=="CBA")
{
if(CBAsales.is_open()==true){
CBAsales.close();
}
CBAsales.open("Datafolder/CBA/sales_index.txt");
if(!CBAsales)
{
cout << CBAsales<<" : File not found!!" << endl;
system("PAUSE");
exit(1);
}
// Read IAG file names.
while(!CBAsales.eof())
{
getline(CBAsales, sFileName);
if(sFileName.size() > 0)
{
string sFilePath = "Datafolder/CBA/";
sFilePath = sFilePath.append(sFileName);
// Read the csv file
infile.open(sFilePath);
if(! infile)
{
cout << sFileName<<": File not foud!!!" << endl;
exit(1);
}
getline(infile, record);//first line
getline(infile, record);//second line
while(! infile.eof())
{
getline(infile, record);
if(record.size() > 0)
{
S1.readfile(record, S1);
data.insert(S1);
counter ++;
}
}//while(! infile.eof())
infile.close();
// Insert to Map
mapIAG.insert(pair<string,Vector<Stock>>(sFileName,data));
}
}
CBAsales.clear();
CBAsales.seekg(0,ios::beg);
Tempsales = &CBAsales;
//cout<<"test2";
}
else
{
if(NABsales.is_open()==true){
NABsales.close();
}
NABsales.open("Datafolder/NAB/sales_index.txt");
if(!NABsales)
{
cout << NABsales<<" : File not found!!!!" << endl;
system("PAUSE");
exit(1);
}
// Read IAG file names.
while(!NABsales.eof())
{
getline(NABsales, sFileName);
if(sFileName.size() > 0)
{
string sFilePath = "Datafolder/NAB/";
sFilePath = sFilePath.append(sFileName);
// Read the csv file
infile.open(sFilePath);
if(! infile)
{
cout << sFileName<<": File not foud!!" << endl;
exit(1);
}
getline(infile, record);//first line
getline(infile, record);//second line
while(! infile.eof())
{
getline(infile, record);
if(record.size() > 0)
{
S1.readfile(record, S1);
data.insert(S1);
counter ++;
}
}//while(! infile.eof())
infile.close();
// Insert to Map
mapIAG.insert(pair<string,Vector<Stock>>(sFileName,data));
}
}
NABsales.clear();
NABsales.seekg(0,ios::beg);
Tempsales = &NABsales;
//cout<<"test3";
}
highestPrice = (data.getvalue(0)).getprice();//Initialise highest price
lowestPrice = (data.getvalue(0)).getprice();//Initialise lowest price
(data.getvalue(0)).gettime(time1, data.getvalue(0));//Initialise time1
cout<<"Enter the date of transaction:" <<endl;
while(!Tempsales->eof()){
getline(*Tempsales,record);
cout<<record<<endl;
}
cin>>sInputDate;
cout<<"Choose from options 1 to 4: "<<endl;
cout << "Enter 1 to get the highest stock price & time:" << endl;
cout << "Enter 2 to get the lowest stock price & time:" << endl;
cout << "Enter 3 to output the csv file: " << endl;
cout << "Enter 4 to exit from the program:" << endl;
cin >> option;
// Get the vector from Map based on Date.
if(sXCode=="IAG")
{
it = mapIAG.find(sInputDate);
data = it->second;
}
else if(sXCode=="CBA")
{
it = mapIAG.find(sInputDate);
data = it->second;
}
else
{
it = mapIAG.find(sInputDate);
data = it->second;
}
}
股票是矢量。