Thread: Problems loading a text file into a struct of vectors

I'm trying to open a text file and load its contents into a struct of vectors. The text file looks something like this...

638912 [email protected] 555-555-3827 Gibson, Martha Elizabeth
582841 [email protected] 555-555-4591 Williams, Henry James III
719472 [email protected] 555-555-6183 Anderson, Tina Marie

The first number is stored in a vector of doubles, and the other 4 (email, phone num, first name, and last name) will be in string vectors.
Each vector is a member of a struct.

The program compiles fine but gives a segmentation fault error when I try to run it. My code for main() looks like this...

Code:

#include <iostream>
#include <fstream>
#include <algorithm>
#include "proj08.database.h"

using namespace std;

int main(int Argc, char *Arg[]){
        int i = 0;
        Student stuInfo;
        ifstream inFile;
        ofstream outFile;

        if(Argc != 2){
                cout << "Improper amount of arguments." << endl;
        }

        inFile.open("project08.sample.students.old");

        while(!inFile.eof()){
                inFile >> stuInfo.studentNum[i] >> stuInfo.email[i] >> stuInfo.phoneNum[i] >>
                          stuInfo.studentLastName[i] >> stuInfo.studentFirstName[i];
                i++;
        }
        return 0;
}

The code in my header where the struct is contained looks like this...

Code:

#ifndef DBASE_
#define DBASE_

#include <iostream>
#include <string>
#include <vector>

using namespace std;

 struct Student{
     vector<double> studentNum;
     vector<string> studentFirstName;
     vector<string> studentLastName;
     vector<string> email;
     vector<string> phoneNum;
 };

#endif

I am unsure of what exactly I am doing wrong here and any help would be appreciated. Thanks!

Code:

inFile.open("project08.sample.students.old");

Is this how you name your files?

The only thing I'm wondering is what is arg[1] supposed to represent. I don't see your use of it anywhere in the program.

...and as ZuK was implying, it seems more logical to me to use an array of the stuct, not arrays in the struct.

Oh, an array of structs I see. That does seem better. Sorry, I didn't understand thats what you meant first off Zuk.

That file name is goofy, I know. It's just the sample one provided by the teacher and thats what he named it.

EDIT:
Forgot to answer the rest of your question. Arg1 will eventually represent the prefix for the file name. Eventually, the program will read 2 text files. Filename.students.old and Filename.transactions.old. The arg1 will be the Filename portion. The program will then know to open those files starting with that prefix and will then do some stuff and output to Filename.students.new and Filename.students.log.

Ok, im trying to implement this and am having some trouble again. I looked into push_back and I believe I have some type of a solution but i'm having all sorts of trouble.

My includes are...

Code:

#include <iostream>
#include <string>
#include <vector>
#include <fstream>
#include <sstream>
#include <algorithm>
#include "proj08.database.h"

My code for reading the stuff in now mostly looks like this.

Code:

Student singleStuInfo;
vector<Student> everyStudent;
string line;
ifstream inFile;

inFile.open("project08.sample.students.old");

        if(!inFile.is_open()){
                cout << "The file could not be opened." << endl;
        }
        else{
                while(!inFile.eof()){
                        getline(inFile, line);
                        istringstream lineStream(line);
                        while(!lineStream.eof()){
                                lineStream >> singleStuInfo.studentNum >> singleStuInfo.email
                                           >> singleStuInfo.phoneNum >> singleStuInfo.lastName
                                           >> singleStuInfo.firstName;
                        }
                        //everyStudent.push_back(singleStuInfo);
                }
        }

        //cout << everyStudent.at(0) << endl;
        return 0;

My struct is like this now...

Code:

struct Student{
     double studentNum;
     string firstName;
     string lastName;
     string email;
     string phoneNum;
};

Currently it is just entering an infinite loop and I am unsure why.