Question

我目前正在开发一个小型控制台应用程序，我从一些文件中读取，我已经制作了一个简单的动画加载栏线程来显示文件读取的进度（有时文件真的很大）

我已经在微软文档和论坛上阅读过该错误似乎表明我多次定义了这个类。

但是我确实包含了所有的标题块以防止这种情况发生，你们中的任何人都会看到我的错误，很明显，我几年没有做过c ++。

这是代码

fileReader.h

#pragma once
#ifndef FILEREADER_H // must be unique name in the project
#define FILEREADER_H

#include <vector>

using namespace std;

class fileReader {

private:

public:
    vector<string> readTextFile(string path);
    unsigned int getSize();
    unsigned int getLoadedBytes();
};
#endif      // FILEREADER_H
#pragma once

fileReader.cpp

#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <thread>

#include "numbers.h"
#include "loadingBar.h"


using namespace std;

class fileReader {
private:

public :
    vector<string> list;
    int i;
    unsigned int size;
    unsigned int loadedBytes;
    string line;
    std::thread* barThread;

    vector<string> fileReader::readTextFile(string path) {

        ifstream file(path.c_str(), ios::in | ios::binary | ios::ate);

        i = 0;
        size = 0;
        loadedBytes = 0;

        ifstream file(path.c_str(), ios::in | ios::binary | ios::ate);

        if (file.is_open()) {
            size = file.tellg();
            cout << "\t" << path << " (" << formatNumbers(size) << " bytes)" << endl;
            file.clear();
            file.seekg(0, ios::beg);

            barThread = new std::thread(&loadingBar::run, *this);

            while (file >> line) {
                list.push_back(line);
                loadedBytes += strlen(line.c_str());
                i++;
            }

        }
        else {
            cout << "Error reading : \"" << path << "\"" << endl;
            exit(EXIT_FAILURE);
        }
        file.close();
        return list;
    }

    unsigned int fileReader::getSize() { return size; }
    unsigned int fileReader::getLoadedBytes() { return loadedBytes; }

};

loadingBar.h

#pragma once
#ifndef LOADINGBAR_H
#define LOADINGBAR_H

#include<stdlib.h>
#include<string>
#include<iomanip>
#include "numbers.h"
#include "fileReader.h"

using namespace std;

class loadingBar {
public:
    void notififyFinish();
    void notifyError();
    void notifiError(string);
    void drawloadingBar();
    void drawPathBar();
    void drawBytesBar();
    void setLoadedUnits(int);
    void setTotalUnits(int);
    void run(fileReader*);

};

#endif // NUMBERS_H

loadingBar.cpp

#include "stdafx.h"
#include <stdio.h>
#include <iostream>
#include <stdlib.h>
#include <string>
#include <iomanip>

#include "numbers.h"
#include "fileReader.h"

using namespace std;

class loadingBar {

private:

public:

    double totalUnits = 1;
    double loadedUnits = 0;
    char loadedChar = '/';
    char emptyChar = ' ';
    int barLength = 50;
    double percent;
    int nbChar;

    void notiftyFinish() {
        cout << " Ok" << endl;
        //exit(EXIT_SUCCESS);
    }

    void notifiyError() {
        cout << " Error !" << endl;
        //exit(EXIT_FAILURE);
    }

    void notifiyError(string errMess) {
        cout << " Error !" << endl << "\t" << errMess;
        //exit(EXIT_FAILURE);
    }

    void drawLoadingBar() {
        cout << fixed;

        cout << "\rLoading [";

        for (int i = 0; i < nbChar; i++)
            cout << loadedChar;

        for (int i = nbChar; i < barLength - 1; i++)
            cout << emptyChar;

        cout << "] " << setprecision(0) << percent << "%";
    }

    void drawPathBar(string path) {
        cout << fixed;

        cout << "\rLoading [ ";

        cout << path;

        cout << " ] " << setprecision(0) << percent << "%";
    }

    void drawBytesBar() {
        cout << fixed;

        cout << "\rLoading [ ";

        cout << formatNumbers(loadedUnits) << " / " << formatNumbers(totalUnits);

        cout << " ] " << setprecision(0) << percent << "%";
    }

    void setLoadedUnits(int newValue) {
        if (newValue > 0)
            loadedUnits = newValue;
    }

    void setTotalUnits(int value) {
        if (value > 0)
            totalUnits = value;
    }

    void run(fileReader *f) {
        setTotalUnits(f->getSize());
        setLoadedUnits(f->getLoadedBytes());

        while (loadedUnits <= totalUnits) {
            setLoadedUnits(f->getLoadedBytes());
            percent = ((double)(loadedUnits / totalUnits) * 100);
            nbChar = (int)(percent / (int)(100 / barLength));

            drawLoadingBar();

            //setLoadedUnits((int)loadedUnits + 10);

            if (loadedUnits >= totalUnits) notiftyFinish();
        }
    }
};

Answer 1

您的.cpp文件重新定义了您的课程。您已经在相应的.h文件中定义了它们。您需要在.cpp文件中包含的所有内容都是实现。他们看起来应该更像这样：

<强> fileReader.cpp

#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <thread>

#include "numbers.h"
#include "loadingBar.h"

vector<string> fileReader::readTextFile(string path) {

    ifstream file(path.c_str(), ios::in | ios::binary | ios::ate);

    i = 0;
    size = 0;
    loadedBytes = 0;

    ifstream file(path.c_str(), ios::in | ios::binary | ios::ate);

    if (file.is_open()) {
        size = file.tellg();
        cout << "\t" << path << " (" << formatNumbers(size) << " bytes)" << endl;
        file.clear();
        file.seekg(0, ios::beg);

        barThread = new std::thread(&loadingBar::run, *this);

        while (file >> line) {
            list.push_back(line);
            loadedBytes += strlen(line.c_str());
            i++;
        }

    }
    else {
        cout << "Error reading : \"" << path << "\"" << endl;
        exit(EXIT_FAILURE);
    }
    file.close();
    return list;
}

unsigned int fileReader::getSize() { return size; }
unsigned int fileReader::getLoadedBytes() { return loadedBytes; }

loadingBar.cpp 。

Visual Studio 2015 C2011＆＃39; Class＆＃39;类型重新定义

1 个答案: