C++

Forum

 
Referencing a class within a different class using a vector

joonida (2)
So I have this class "Shopping Card" referencing a class I made named "ItemToShop" using a vector. This is coming up 'ItemToPurchase': undeclared identifier. I'm not sure what is going wrong, but I think it is because of how I am incorporating the file.

1
2
3
4
5
6
7
8
9
10
11
12
13
 
//ShoppingCart.h
  #pragma once
class ShoppingCart
{
public:
	ShoppingCart(string customerNameIn, string dateIn);
	

private:
	string customerName = "none";
	string date = "January 1, 2016";
	vector<ItemToPurchase> itemVector;
};


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
//ShoppingCart.cpp
#include <iostream>
#include <string>
#include <vector>
#include <sstream>
#include <iomanip>
using namespace std;
#include "ShoppingCart.h"
#include "ItemToPurchase.h"



ShoppingCart::ShoppingCart(string customerNameIn, string dateIn)
{
	customerName = customerNameIn;
}


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
 
//ItemToPurchase.h
#pragma once


class ItemToPurchase
{
private:
	string itemName;
	double itemPrice;
	int itemQuantity;
	string description;

public:
	ItemToPurchase();
	void SetName(string nameIn);
	string GetName();
	void SetPrice(double priceIn);
	double GetPrice();
	void SetQuantity(int quantityIn);
	int GetQuantity();
	void SetDescription(string descriptionIn);
	string GetDescription();
	string PrintCost();
	string PrintDescription();

};


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
 
//ItemToPurchase.cpp
#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>
using namespace std;
#include "ItemToPurchase.h"


ItemToPurchase::ItemToPurchase()
{
	itemName = "";
	itemPrice = 0.0;
	itemQuantity = 0;
}

void ItemToPurchase::SetName(string nameIn)
{
	itemName = nameIn;
}

string ItemToPurchase::GetName()
{
	return itemName;
}

void ItemToPurchase::SetPrice(double priceIn)
{
	itemPrice = priceIn;
}

double ItemToPurchase::GetPrice()
{
	return itemPrice;
}

void ItemToPurchase::SetQuantity(int quantityIn)
{
	itemQuantity = quantityIn;
}

int ItemToPurchase::GetQuantity()
{
	return itemQuantity;
}

void ItemToPurchase::SetDescription(string descriptionIn)
{
	description = descriptionIn;
}

string ItemToPurchase::GetDescription()
{
	return description;
}

string ItemToPurchase::PrintCost()
{
	ostringstream costStream;
	const int MONEY_PRECISION = 2;

	costStream << itemName << " " << itemQuantity << " @ $" << fixed << setprecision(MONEY_PRECISION) << itemPrice << " =  $" << itemQuantity * itemPrice;
	//Ex: Bottled Water 10 @ $1.50 = $15.00
	return costStream.str();
}

string ItemToPurchase::PrintDescription()
{
	ostringstream descriptionStream;
	descriptionStream << itemName << ": " << description;
	//Ex: Bottled Water: Deer Park, 12 oz.
	return descriptionStream.str();
}


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
//main.cpp
#include <iostream>
#include <cctype>
#include <ios>
#include <iomanip>
#include <string>
#include <math.h>
#include <vector>
#include <fstream>
#include <limits>
#include <sstream>
using namespace std;

#include "ItemToPurchase.h"
#include "ShoppingCart.h"

int main()
{
  //code
}
keskiverto (10402)
First file:
1
2
3
4
5
6
7
8
 
//ShoppingCart.h
#pragma once

class ItemToPurchase; // forward declare a typename

class ShoppingCart
{
  // ...
joonida (2)
I just had to include ItemToPurchase in my ShoppingCart.h
Thanks!
keskiverto (10402)
There is no reason to include the whole definition, when forward declaration is sufficient.
Topic archived. No new replies allowed.