C++ run error: pointer being freed was not allocated
- by Dale Reves
I'm learning c++ and am working on a program that keeps giving me a 'pointer being freed was not allocated' error. It's a grocery store program that inputs data from a txt file, then user can enter item# & qty. I've read through similar questions but what's throwing me off is the 'pointer' issue. I would appreciate if someone could take a look and help me out. I'm using Netbeans IDE 7.2 on a Mac.
I'll just post the whole piece I have so far. Thx.
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
using namespace std;
class Product
{
public:
// PLU Code
int getiPluCode()
{
return iPluCode;
}
void setiPluCode( int iTempPluCode)
{
iPluCode = iTempPluCode;
}
// Description
string getsDescription()
{
return sDescription;
}
void setsDescription( string sTempDescription)
{
sDescription = sTempDescription;
}
// Price
double getdPrice()
{
return dPrice;
}
void setdPrice( double dTempPrice)
{
dPrice = dTempPrice;
}
// Type..weight or unit
int getiType()
{
return iType;
}
void setiType( int iTempType)
{
iType = iTempType;
}
// Inventory quantity
double getdInventory()
{
return dInventory;
}
void setdInventory( double dTempInventory)
{
dInventory = dTempInventory;
}
private:
int iPluCode;
string sDescription;
double dPrice;
int iType;
double dInventory;
};
int main ()
{
Product paInventory[21]; // Create inventory array
Product paPurchase[21]; // Create customer purchase array
// Constructor to open inventory input file
ifstream InputInventory ("inventory.txt", ios::in);
//If ifstream could not open the file
if (!InputInventory)
{
cerr << "File could not be opened" << endl;
exit (1);
}//end if
int x = 0;
while (!InputInventory.eof () )
{
int iTempPluCode;
string sTempDescription;
double dTempPrice;
int iTempType;
double dTempInventory;
InputInventory >> iTempPluCode >> sTempDescription >> dTempPrice >> iTempType >> dTempInventory;
paInventory[x].setiPluCode(iTempPluCode);
paInventory[x].setsDescription(sTempDescription);
paInventory[x].setdPrice(dTempPrice);
paInventory[x].setiType(iTempType);
paInventory[x].setdInventory(dTempInventory);
x++;
}
bool bQuit = false;
//CREATE MY TOTAL VARIABLE HERE!
int iUserItemCount;
do
{
int iUserPLUCode;
double dUserAmount;
double dAmountAvailable;
int iProductIndex = -1;
//CREATE MY SUBTOTAL VARIABLE HERE!
while(iProductIndex == -1)
{
cout<<"Please enter the PLU Code of the product."<< endl;
cin>>iUserPLUCode;
for(int i = 0; i < 21; i++)
{
if(iUserPLUCode == paInventory[i].getiPluCode())
{
dAmountAvailable = paInventory[i].getdInventory();
iProductIndex = i;
}
}
//PLU code entry validation
if(iProductIndex == -1)
{
cout << "You have entered an invalid PLU Code.";
}
}
cout<<"Enter the quantity to buy.\n"<< "There are "<< dAmountAvailable << "available.\n";
cin>> dUserAmount;
while(dUserAmount > dAmountAvailable)
{
cout<<"That's too many, please try again";
cin>>dUserAmount;
}
paPurchase[iUserItemCount].setiPluCode(iUserPLUCode);// Array of objects function calls
paPurchase[iUserItemCount].setdInventory(dUserAmount);
paPurchase[iUserItemCount].setdPrice(paInventory[iProductIndex].getdPrice());
paInventory[iProductIndex].setdInventory( paInventory[iProductIndex].getdInventory() - dUserAmount );
iUserItemCount++;
cout <<"Are you done purchasing items? Enter 1 for yes and 0 for no.\n";
cin >> bQuit;
//NOTE: Put Amount * quantity for subtotal
//NOTE: Put code to update subtotal (total += subtotal)
// NOTE: Need to create the output txt file!
}while(!bQuit);
return 0;
}
