C++

Forum

 
Inventory will not display or load

crowdiax25 (12)
Hey there everyone! I feel like I'm almost done with this, but I can't quite figure something out. This program is meant to read an inventory from invent.in and then print a receipt to receipt.out. Sadly, the inventory will not print to the display, and it says the products are not found. Any help is appreciated! Here is my code.

groceries.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
#ifndef GROCERIES_H
#define GROCERIES_H

using namespace std;

const double TAXRATE = 0.075;


// Item in grocery inventory
class Groceries
{
public:
	// Constructors
	Groceries() : product(-1), description(""), price(0.0), taxable(' ') { }
	// Groceries
	Groceries(int prod, string desc, double cost, char tax) :
		product(prod), description(desc), price(cost), taxable(tax) { }


	// Input/output
	void ReadGroceries(istream& in);
	void WriteGroceries(ostream& out);

	// Access functions
	inline int Product() { return(product); }
	inline string Description() { return(description); }
	inline double Price() { return(price); }
	inline char Taxable() { return(taxable); }

	// Calculations
	inline double Sale(int quantity) { return(price * quantity); }
	inline double Tax(int quantity) {
		return(taxable != 'T' ? 0.00 : Sale(quantity) * TAXRATE);
	}

private:
	int product;			// Product code
	string description;		// Description
	double price;			// Unit price
	char taxable;			// T = Taxable and N = Non-taxable
};

// Grocery stockroom
class Stockroom
{
public:
	// Constructor
	Stockroom(int shelves);

	// Output
	void WriteStock(ostream& out);

	// Enter food into stock
	bool BuyStock(Groceries food);

	// Search for product
	Groceries* GroceryClerk(int prod);

	//Load GroceryList from file
	void LoadGroceryList(const char* Filename); // Print invent from file

private:
	Groceries *pantry;		// Groceries in stock
	int groceries,			// Number of groceries in stock
		stockshelves;		// Max groceries in stock

};
#endif


groceries.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
 
#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>
#include "groceries.h"

using namespace std;

// Input Groceries from in
void Groceries::ReadGroceries(istream& in)
{
	in >> product >> description >> price >> taxable;
}

// Output Groceries to out
void Groceries::WriteGroceries(ostream& out)
{
	out << setiosflags(ios::fixed) << setiosflags(ios::showpoint);
	out.precision(2);			// Formatting for receipt
	string desc = description;
	int descblanks = 12 - desc.length() + 1;
	for (int d = 0; d < descblanks; d++) desc += ' ';
	out << setw(5) << product << " " << desc << setw(4) << price
		<< " " << taxable;
}


// Stockroom for shelves items
Stockroom::Stockroom(int shelves)
{
	pantry = new Groceries[shelves];
	stockshelves = shelves;
	groceries = 0;
}

// Returns true if food added to stock, false otherwise
bool Stockroom::BuyStock(Groceries food)
{
	if ((groceries + 1) >= stockshelves) return(false);
	for (int g = 0; g < groceries; g++)
		if (food.Product() < pantry[g].Product()) {
			for (int g1 = groceries++; g1 >= g; g1--)
				pantry[g1 + 1] = pantry[g1];
			pantry[g] = food;
			return(true);
		}
		else if (food.Product() == pantry[g].Product()) return(true);
		pantry[groceries++] = food;
		return(true);
}

Groceries* Stockroom::GroceryClerk(int prod)
{
	int low = 0;
	int high = groceries - 1;
	while (low <= high) {
		int mid = (low + high) / 2;
		if (pantry[mid].Product() == prod) return(&pantry[mid]);
		if (pantry[mid].Product() < prod) low = mid + 1;
		else high = mid - 1;
	}
	return(NULL);
}

// Output all items in Stockroom to out
void Stockroom::WriteStock(ostream& out)
{
	for (int g = 0; g < groceries; g++) {
		pantry[g].WriteGroceries(out);
		out << endl;
	}
	out << endl;
}


void Stockroom::LoadGroceryList(const char* FileName)
{

	ifstream invent(FileName);	// Read inventory
	if (invent.is_open())
	{
		groceries = 0; //
		Groceries TempGrocery;
		// Read in stock until max stock value is reached
		for (int count = 0; count < stockshelves; count++)
		{

			TempGrocery.ReadGroceries(invent);
			if (!invent.eof() || !invent.fail())
			{
				// Save grocery data
				pantry[count] = TempGrocery;
				groceries++;
			}
			else
			{
				// End of file; read failed
				break;
			}

		}

		invent.close();
	}


}


main.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
 
#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <string>
#include "groceries.h"


using namespace std;

const char *RECEIPTS = "receipts.out";	// File for receipts
const char *INVENT = "invent.in";	// File for inventory
const int STOCKROOM = 30;		// Max items in inventory

int main()
{

	Stockroom stockroom(30);
	stockroom.LoadGroceryList(INVENT); //Stockroom loads the groceries

	ofstream receipts(RECEIPTS);
	stockroom.WriteStock(receipts);	// List inventory on the receipt
	stockroom.WriteStock(cout);	// List inventory on the screen

	int customer = 1;
	char more;	// For holding whether or not there are more transactions
	do {
		double bought(0.00), tax(0.00);
		receipts << endl << "Customer " << customer << endl;
		cout << "Enter purchases for customer # " << customer++ << endl
			<< "Enter product code '0' to end the transaction." << endl << endl;

		cout << setiosflags(ios::fixed) << setiosflags(ios::showpoint);
		cout.precision(2);
		receipts << setiosflags(ios::fixed) << setiosflags(ios::showpoint);
		receipts.precision(2);

		int prod, quantity;
		do {
			
			cin >> prod;
			if (prod > 0) {
				Groceries *product = stockroom.GroceryClerk(prod);
				cin >> quantity;

				if (product == NULL) {	// Product not found?
					receipts << "*** Item " << prod << " not found in inventory ***" << endl;
					cout << "*** Item " << prod << " not found in inventory ***" << endl;

				}
				else if ((quantity < 1) || (10 < quantity)) {
					receipts << "*** " << quantity << " of item " << prod <<
						" are not for sale ***" << endl;
					cout << "*** " << quantity << " of item " << prod <<
						" are not for sale ***" << endl;
				}
				else {		// Sale can proceed
					bought += product->Sale(quantity);
					tax += product->Tax(quantity);
					string desc = product->Description();
					int descblanks = 12 - desc.length() + 1;
					for (int d = 0; d < descblanks; d++)
						desc += ' ';
					receipts << desc << setw(2) << quantity << " @ " << setw(4) <<
						product->Price() << setw(6) << product->Sale(quantity)
						<< (product->Tax(quantity) > 0.00 ? " TX" : " ") << endl;

					cout << desc << setw(2) << quantity << " @ " << setw(4) <<
						product->Price() << setw(6) << product->Sale(quantity)
						<< (product->Tax(quantity) > 0.00 ? " TX" : " ") << endl;

				}
			}
		} while (prod != 0);

		if (bought > 0.00) {		// If customer made purchase
			receipts << endl << "          Subtotal "
				<< setw(5) << bought << endl <<
				"                   Tax "
				<< setw(5) << tax << endl << endl <<
				"                 Total "
				<< setw(5) << (bought + tax) << endl << endl;

			cout << endl << "              Subtotal "
				<< setw(5) << bought << endl <<
				"                   Tax "
				<< setw(5) << tax << endl << endl <<
				"                 Total "
				<< setw(5) << (bought + tax) << endl << endl;

		}

		cout << "Is there another customer? (Y/N) ";
		cin >> more;
	} while (more == 'Y' || more == 'y');

	// Stop if they say 'N'
	cout << "Thanks for shopping with us!" << endl;

	return 0;
}
crowdiax25 (12)
Here is my inventory txt file:

12112 eggs 1.99 N
56312 bacon 2.99 N
82142 bread 0.89 N
96012 jam 1.49 N
42315 spatula 0.99 T
57416 waffles 1.29 N
23412 strawberries 1.49 N
Topic archived. No new replies allowed.