讀取陣列結構在C++

Question

我有一個項目中，我必須讀出的數據文件轉換成稱爲本田一個結構陣列，其尺寸適合10行數據。我無法成功讀取文本文件。這裏的代碼我到目前爲止：

#include "stdafx.h" 
#include <iostream> 
#include <string> 
#include <fstream> 
#include <iomanip> 

using namespace std; 

struct Honda { 
    int id; 
    int year; 
    string model; 
    string trim; 
    string color; 
    int engine; 

}; 

const int SIZE = 10; 

void openInputFile(ifstream &, string); 

int main() 
{ 
    Honda arr[SIZE]; 

    ifstream inFile; 
    string inFileName = "C:\\Users\\Michael\\Documents\\inventory.txt"; 

    openInputFile(inFile, inFileName); 

    for (int count = 0; count < SIZE; count++) { 
     inFile >> arr[count].id >> arr[count].year >> arr[count].trim >> arr[count].color >> arr[count].engine; 
    } 

    inFile.close(); 
    return 0; 
} 

void openInputFile(ifstream &inFile, string inFileName) 
{ 
    //Open the file 
    inFile.open(inFileName); 

    //Input validation 
    if (!inFile) 
    { 
     cout << "Error to open file." << endl; 
     cout << endl; 
     return; 
    } 
} 

文本文件：inventory.txt

1001 2014 Civic LX Red 4 
1002 2014 Accord LX Blue 4 
1005 2014 Accord EX Gold 6 
1006 2014 Civic EX Black 4 
1007 2014 Civic LX White 4 
1010 2015 Accord EX White 6 
1011 2015 Accord LX Black 4 
1013 2015 Civic EX Red 4 
1014 2015 Civic LX Beige 4 
1015 2015 Accord EX Beige 6 

Answer 1

你只是缺少代碼逐行讀取文件中的行。

#include <iostream> 
#include <string> 
#include <fstream> 
#include <iomanip> 
#include <sstream> 

using namespace std; 

struct Honda { 
    int id; 
    int year; 
    string model; 
    string trim; 
    string color; 
    int engine; 

}; 

const int SIZE = 10; 

void openInputFile(ifstream &, string); 

int main() 
{ 
    Honda arr[SIZE]; 

    ifstream inFile; 
    string inFileName = "C:\\temp\\1.txt"; 

    openInputFile(inFile, inFileName); 

    int count = 0; 
    string line; 
    while(inFile.good() && (getline(inFile, line))) 
    { 
     istringstream iss(line); 
     iss >> arr[count].id >> arr[count].year >> arr[count].model >> arr[count].trim >> arr[count].color >> arr[count].engine; 

     count++; 
    } 



    for (int i=0; i < 10; i++) 
    { 
     std::cout << arr[i].id << " " << arr[i].year << " " << arr[i].model << " " << arr[i].trim << " " << arr[i].color << " " << arr[i].engine << "\n"; 

    } 

    inFile.close(); 
    return 0; 
} 

void openInputFile(ifstream &inFile, string inFileName) 
{ 
    //Open the file 
    inFile.open(inFileName); 

    //Input validation 
    if (!inFile) 
    { 
     cout << "Error to open file." << endl; 
     cout << endl; 
     return; 
    } 
}