Segmentation Fault

[h0m3r0w]

I've been working on this project for school for quite some time, and I just can't get it right. I'm not looking for a direct answer, because I still want to try and learn and figure out, but instead for some clues as to what the heck the problem seems to be. Now, I have 3 .cpp files and 2 header files. Most of them work. The only problem I believe is causing all of this is one of the .cpp files entitled: "SalesDB.cpp". I'll post the source code here (along with the header file just to give you an idea of what I'm dealing with.

SalesDB.cpp

#include "SalesDB.h"
#include "Seller.h"

SalesDB::SalesDB()
{
	numSellers = 0;
}

SalesDB::SalesDB(const char * DBFile)
{
	ifstream inFile;
	inFile.open(DBFile);

	if(inFile.fail()){
		cout << "File not found" << DBFile << endl;
	}
	inFile.read((char*) this, sizeof(SalesDB));
	inFile.close();

	sortSellers();
}

void SalesDB::print()
{
	cout << "Sales Database Listing" << endl;
	for(int i = 0; i < numSellers; i++)
		sales[i].print();
}

void SalesDB::sortSellers()
{
int i, j;
Seller bucket;

for (i = 1; i < numSellers; i++)
	{
	bucket = sales[i];

	for (j = i; (j > 0) && (strcmp(sales[j-1].getName(), bucket.getName())> 0); j--)
		sales[j] = sales[j-1];
		sales[j] = bucket;
	}
}

int SalesDB::searchForSeller(char name[])
{
int low = 0;
int high = numSellers - 1;
int mid;

while (low <= high)
	{
	mid = (low + high) / 2;

	if(strcmp(sales[mid].getName(), name) == 0)
		return mid;
else if(strcmp(sales[mid].getName(), name) > 0)
		high = mid - 1;
	else
		low = mid + 1;
		}
	return - 1;
	}

void SalesDB::processSalesData(const char * DBFile)
{
ifstream inFile;
char lastName[21];
char firstName[11];
double salesAmount = 0;
char name[31];

inFile.open(DBFile);

if(inFile.fail())
{
	cout << "File not found" << DBFile << endl;
}

inFile >> lastName;
while(!inFile.fail())
{
	inFile >> firstName;
	inFile >> numSellers;

	strcat(name, lastName);
	strcat(name, ", ");
	strcpy(name, firstName);

	int index = searchForSeller(name);
	if(index == -1)
		cout << "No Record on File";
	else
sales[index].setSalesTotal(sales[index].getSalesTotal()+salesAmount);
	inFile >> lastName;
	}

inFile.close();
}

SalesDB.h

#ifndef SELLER_H
#define SELLER_H

//*****************************************************************
// FILE:      Seller.h
// AUTHOR:    Damani Brown
// LOGON ID:  z1619599
// DUE DATE:  9/23/11
//
// PURPOSE:   Contains the declaration for the Seller class.
//*****************************************************************
#include <iomanip>
#include <iostream>
#include <string>
#include <fstream>
#include <cstring>

using std::cout;
using std::fstream;
using std::endl;
using std::setw;
using std::ios;

class Seller
	{
	private:
		char name[31];
		double sales_total;
	public:
		Seller();
		Seller(const char*, double);
		const char* getName();
		double getSalesTotal();
		void setSalesTotal(double);
		void print();
	};

#endif

Any help would be great guys/gals of this forum. I came here because it looks like all the tier 1 programmers come here lol.