Ok, I am confused by this. I am doing a school project on i/o with an address database. The professor gave us a template to work with, which saved me a few minutes.
The problem is I can enter information to the txt file fine. When I attempted to read it I get this error from VS2010 "Unhandled exception at 0x00cb3246 in LAB7.exe: 0xC0000005: Access violation reading location 0x00000014." Can someone take a look at my code and give me some direction?
//Specification: Append and display records in an address database
// Headers
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
void menu(void);
void writeData(void);
void readData(void);
string * split(string, char);
const char FileName[] = "TestAddress/TestAddress.txt";
ifstream myAddress("TestAddress.txt");
string name = " ";
string address = " ";
string street= " ";
string city = " ";
string state = " ";
string zipCode = " ";
int record = 0;
ofstream outMyAddress("TestAddress.txt", ios::out);
int main ()
{
menu();
return 0;
} //end main
void menu(void)
{
//allow user to choose to append records, display records or exit the program
char userChoice = ' ';
//Display Menu
system("cls");
cout << "\nName and Address database:" << endl;
cout << endl;
cout << "\n\n(A)ppend record, (S)how Record, (E)xit:";
cin >> userChoice;
//Users Choice
switch (userChoice)
{
case 'a':
case 'A'://Append Record
myAddress.open (FileName, ios::app);
if (myAddress.is_open())
{writeData(); }
break;
case 's':
case 'S'://Show record
myAddress.open ("TestAddress.txt", ios:: in);
if (myAddress.is_open())
{readData(); }
break;
case 'e':
case 'E'://Exit
myAddress.close();
break;
default:
cout << "Invalid choice" << endl;
cout << endl << endl << endl;
break;
}
return;
}//end menu
void writeData(void) //Write the Address Info to a file
{
char answer = ' ';
char response = ' ';
//entering loop
while (answer != 'n' || answer != 'N')
{
cout << endl;
getline(cin, name);
cout<< "\nEnter name: ";
getline(cin, name);
cout<< "\nEnter Street: ";
getline(cin, street);
cout<< "\nEnter City: ";
getline(cin, city);
cout<< "\nEnter State: ";
getline(cin, state);
cout<< "\nEnter Zip Code: ";
getline(cin, zipCode);
cout << endl;
outMyAddress << name << ", " << street << " ," << city << ", " << state << " ," << zipCode << endl;
record++;
cout << "\nWould you like to enter another record? (Y/N)" << endl;
cin >> response;
if (response == 'n' || response == 'N')
{
return menu();
}
}
myAddress.close();
}//end write data
void readData(void)
{
ifstream inMyAddress("TestAddress.txt", ios::in);
string firstLine;
inMyAddress >> firstLine;
getline (myAddress, firstLine, '\n');
cout << endl;
cout << "Reading the file(s)..." << endl;
cout << endl;
//read data from a file
//use the split function to break a deliminated line of text into fields
cout << "Record #: " << record << endl;
string *theField = split(firstLine, ',');
cout << "Name......" << theField[0] << endl;
cout << "Street......" << theField[1] << endl;
cout << "City......" << theField[2] << endl;
cout << "State......" << theField[3] << endl;
cout << "Zip Code......" << theField[4] << endl;
inMyAddress.close();
system("pause");
return menu();
}//end read data
string * split(string theLine, char theDeliminator){
//Break theline into fields and save the fields to an array.
//Each field will occupy one element in a character array.
//theLine is a string with fields separated with theDeliminator character.
//Assumes the last field in the string is terminated with a newline.
//Useage: string *theFields = split(lineBuffer, ',');
//determine how many splits there will be so we can size our array
int splitCount = 0;
for(int i = 0; i < theLine.size(); i++){
if (theLine[i] == theDeliminator)
splitCount++;
return 0;
}
splitCount++; //add one more to the count because there is not an ending comma
//create an array to hold the fields
string* theFieldArray;
theFieldArray = new string[splitCount];
//split the string into seperate fields
string theField = "";
int commaCount = 0;
for(int i = 0; i < theLine.size(); i++){ //read each character and look for the deliminator
if (theLine[i] != theDeliminator) {
theField += theLine[i]; //build the field
}
else { //the deliminator was hit so save to the field to the array
theFieldArray[commaCount] = theField; //save the field to the array
theField = "";
commaCount++;
}
}
theFieldArray[commaCount] = theField; //the last field is not marked with a comma...
return theFieldArray;
} //end split
