Question

Read a text file using C++

Asked by: Rockie1

Hi,
I need to read from a text file that is basically composed of 3 columns. The first two columns are integers and the third column is the description of the item on inventory.

I need to read these 3 columns and get the total count on the inventory which is the second column. The first column is the item number which has to be sorted numerically.
After I read this file I need to produce a second text file with the total inventory count and the items sorted by item number.
I am not too familiar with C++ so any help would be greatly appreciated.

#include <cstdlib>
#include <iostream>
#include <fstream>
#include <string>
 
using namespace std;
 
int main(int argc, char *argv[])
{
    
    ifstream inSource;
    inSource.open("C:\CCLInventory.txt");
    string strRow;
    int sum = 0;
    int x = 0;
 
    
    if (inSource.is_open())
    {
        while (! inSource.eof() )
        {
            getline (inSource,strRow);
            cout << strRow << endl;
            
            if (strRow.empty()) continue;
            
            
        }
            inSource.close();
            
            
    }
 
    else cout << "Unable to open file"; 
    
    
    system("PAUSE");
    return EXIT_SUCCESS;
}

                                  
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Asked On
2009-10-19 at 19:22:52ID24825635
Tags

DEV-C++

Topics

C++ Builder

,

C Programming Language

Participating Experts
2
Points
250
Comments
4

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Answers

 

by: rendaduiyanPosted on 2009-10-19 at 22:04:04ID: 25611172

you can split each line by the token.

you can use strtok in C; if you want C++ code, you can use string::find.

 

by: Let_Me_BePosted on 2009-10-19 at 22:46:05ID: 25611283

You didn't specify how are the columns delimited, but try strinstream, it works the same way as any stream but on top a of string, so you can parse the line you just read from the file.

http://www.cplusplus.com/reference/iostream/stringstream/stringstream/

 

by: Rockie1Posted on 2009-10-23 at 03:50:31ID: 31643215

It was useful information

20120131-EE-VQP-002

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