Question

我创建模板向量来读取我的infile txt（courseofsale.txt）并通过csv文件（output.csv）输出。一切都是正确的，但最高价格和最低价格的时机是错误的 The highest price timing must be like this

while the lowest price timing must be like this

但是我得到16:57作为两者的时间。这是我的主要cpp

// MainTest.cpp
//
// Class that runs the main program modules.


#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
#include "StockT.h"
#include "VectorT.h"

void highestPrice();
void lowestPrice();
void outputFile();


VectorT<StockT> V1(4000);
StockT S1;
DateT d1;
TimeT t1;

using namespace std;

//----------------------------------------------------------------------------
//Main Method

int main()
{
    ifstream inData;
    inData.open("courseofsales.txt");
    string line;
    string sDay, sMonth, sYear, sHour, sMinute,sSecond,sCondition;
    double price,value;
    int volume;

    //Reading the text file

    if (inData.is_open())
    {
        inData.ignore(500, '\n');
        inData.ignore(500, '\n');
        while (getline(inData, line, '\n'))
        {
            while (!inData.eof())
            {
                sDay = line.substr(0, 2);
                sMonth = line.substr(3, 2);
                sYear = line.substr(6, 4);
                sHour = line.substr(11, 2);
                sMinute = line.substr(14, 2);
                sSecond = line.substr(16, 2);

                inData.ignore(50, '\t');
                inData >> price;
                inData.ignore(50, '\t');
                inData >> volume;
                inData.ignore(50, '\t');
                inData >> value;
                inData.ignore(50, '\t');
                getline(inData, sCondition);
                S1.setAll(price, volume, value, sDay, sMonth, sYear, sHour, sMinute, sSecond);
                V1.push_back(S1);
            }
        }
        inData.close(); //closing text file
    }

    else
        cout << "Unable to open file";

    int choice;
    do {
    cout << "Please enter your choice: " << endl << endl;
    cout << "1. Retrieve highest share price of the day" << endl;
    cout << "2. Retrieve lowest share price of the day" << endl;
    cout << "3. Generate output file" << endl;
    cout << "4. Exit the program" << endl;
    cout << "Your choice: ";
    cin >> choice;
    cout << endl;
    if (choice == 1)
        {
            cout << endl << "This is the highest bid of the day: " << endl;
            highestPrice(); //calls the method for retrieving highest price
            cout << endl;
        }

        else if (choice == 2)
        {
            cout << endl << "This is the lowest bid of the day: " << endl;
            lowestPrice(); //calls the method for retrieving lowest price
            cout << endl;
        }

        else if (choice == 3)
        {
            cout << endl << "Check your file." << endl;
            outputFile(); //calls the method to create output.csv
        }

        else if (choice == 4)
            exit(0); //exit the program

        else
        {
            cout << endl << "This is an invalid choice. Enter again. " << endl;
        }
    }while(choice != 1 || choice != 2 || choice != 3 || choice != 4); //Looping for user input till the program exits

    system("PAUSE");
    return 0;
}

//----------------------------------------------------------------------------
//Retrieve the highest share price.

void highestPrice()
{
    double HP = V1.at(0).getPrice();
        for (int i = 0; i < V1.size(); i++)
        {
            if (V1.at(i).getPrice() > HP)
            {
                HP = V1.at(i).getPrice();
            }
        }

        for (int j = 0; j < V1.size(); j++)
        {
            if (V1.at(j).getPrice() == HP)
            {
                    cout << "Date and Time of transaction: " << V1.at(j).getDate() << V1.at(j).getTime()<< endl;
                    cout << "Highest price: " << V1.at(j).getPrice() << endl;
                    break;
            }
        }
        cout << endl;
}

//----------------------------------------------------------------------------
//Retrieve the lowest share price.

void lowestPrice()
{
    double LP = V1.at(0).getPrice();
    for (int i = 0; i < V1.size(); i++)
    {
        if ((V1.at(i).getPrice() < LP) && (V1.at(i).getPrice() != 0))
        {
            LP = V1.at(i).getPrice();
        }
    }

    for (int j = 0; j < V1.size(); j++)
    {
        if (V1.at(j).getPrice() == LP)
        {
            cout << "Date and Time of transaction: " << V1.at(j).getDate() << V1.at(j).getTime()<< endl;
            cout << "Lowest price: " << V1.at(j).getPrice() << endl;
            break;
        }
    }
    cout << endl;
}

//----------------------------------------------------------------------------
//Creates the output file

void outputFile()
{
    ofstream outData;
    outData.open("output.csv");
    string line;
    int c1 = 0;

    if (outData.is_open())
    {
        for (int i = 0; i < V1.size(); i++)
        {
            outData << V1.at(i).getDate() << "," << setw(5);
            outData << V1.at(i).getTime() << "," << setw(5);
            outData << V1.at(i).getPrice() << "," << setw(5);
            outData << V1.at(i).getVolume() << "," << setw(5);
            outData << V1.at(i).getValue();
            outData << '\n';
        }

        outData.close();
    }

    else
        cout << "Unable to write file";
}

Answer 1

考虑一下，如果16:57是最后一项的时间，StockT中的复制构造函数是坏的，只创建浅拷贝，而你以需要深拷贝的方式使用它（在V1.push_back(S1);）。

这是我在这里的最后一条评论，因为您没有提供MCVE，也看起来您不知道如何调试代码或了解它。只需重做一些基础编程课程并阅读有关数据结构和内存的内容，以便更好地了解内部发生的事情，并学习如何使用调试器进行检查。

输出时间不是infile本身

1 个答案: