Trouble reading from a file

[thecherb]

So I have a problem that makes no sense to me. Here's what I have so far.

// final2.cpp : main project file.


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

using namespace std;
using namespace System;

int main(array<System::String ^> ^args)
{
ifstream inFile;
ofstream outFile;

//from "memberdata.txt"
string firstname[100];
string lastname[100];
int bookspurchased[100];
int totalspent[100];

//from "bookdata.txt"
string title[100];
string authorfirst[100];
string authorlast[100];
string publisher[100];
string isbn[100];
string year[100];
string cost[100];
string qty[100];

//miscellaneous variables
int a=0, c=0, b = 0;



//reading data from memberdata file
inFile.open("c:\\memberdata.txt");
while (!inFile.eof())
{

inFile>>firstname[a]>>lastname[a]>>bookspurchased[a]>>totalspent[a];
cout<<firstname[a]<<lastname[a]<<bookspurchased[a]<<totalspent[a]<<endl;
a++;
}
inFile.close();

//reading from bookdata file
inFile.open("c:\\bookdata.txt");
while (!inFile.eof())
{
inFile>>title[c]>>authorlast[c]>>authorfirst[c]>>publisher[c]>>isbn[c]>>year[c]>>cost[c]>>qty[c];
cout<<title[c]<<authorlast[c]<<authorfirst[c]<<publisher[c]<<isbn[c]<<year[c]<<cost[c]<<qty[c]<<endl;
c++;
}
inFile.close();




return 0;
}



This code reads the first file, memberdata, fine. But it completely skips bookdata. What's the issue? If I put the entire bookdata while loop first, it will read that fine, and then skips memberdata! Any help would be appreciated.

[IllegalCharacter]

Please use code tags, like this:
[code]
This is a block of text surrounded by

 tags.

Try putting

inFile.seekg(ios_base::beg);

after your first inFile.close().

[thecherb]

Unfortunately that code didn't seem to do anything.

[01010011]

The following program is similar to yours, except that I used getline(); and I declared my variables using char (someone advised me to use string instead).

# include <iostream>
# include <fstream>

using namespace std;

int main()
{

const int size = 50;
char Title[ size ];
char Author[ size ];
char ISBN[ size ];
char price[ size ];
char line[ size ];


ofstream outfile;
outfile.open("myfilename.txt",ios::app);
outfile.close();

ifstream infile;
infile.open("myfilename.txt"); 
while ( infile ) 
{ 

   
   // read another record 
   infile.getline( Title, size ); 
   infile.getline( Author, size ); 
   infile.getline( ISBN, size ); 
   infile.getline( price, size ); 
   infile.getline( line, size );
   
   
      
   // display    
   cout << Title  << endl 
     << Author << endl 
     << ISBN   << endl 
     << price  << endl << endl; 

   


}// end while 

if (infile == false) 
   cout<<"Could not open the input file"<<endl;   

   
   infile.close();
   
   system ("pause");
}

Book information from file:

Harry Potter and the Deathly Hallows 
J K Rowlin and Mary GrandPré 
0545010225 
20.99 
------------------------------------
Pride and Prejudice 
Jane Austen 
0307386864 
7.95 
------------------------------------
Wuthering Heights 
Emily Bronte 
0553212583 
4.95
------------------------------------

[Philip Nicoletti]

Once you get to EOF in the first file, that state of the stream is
such that any use after that will fail (even if you open a
different file).

One solution is to use a different ifstream object for the second file.

Another solution is to clear the inernal states of the stream object
so that it can be used again.

inFile.close();

in.clear();   // add this line

//reading from bookdata file
inFile.open("c:\\bookdata.txt");

[7stud]

1) When an ifstream object hits the end of the file, a flag is set inside the object that puts it into an error state. When an ifstream object is in an error state, it cannot be used to read from a file. You can use clear() to reset the flag in the ifstream object.

2) When you read from a file, your read statement should be the while loop conditonal. If instead your while loop conditional checks for eof, then your while loop might become an infinite loop. The way that could happen is if an error occurs while reading from the file. After an error occurs, you will no longer be able to read from the file, but you won't be at eof either, so your while loop will become an infinite loop.

3)

int main(array<System::String ^> ^args)

What in the hell is that?