C++ Lab (ZyLabs 10.22) Help: Online Shopping Cart

The instructions are as follows:

(1) Create three files to submit:

• ItemToPurchase.h - Class declaration
• ItemToPurchase.cpp - Class definition
• main.cpp - main() function

[I still struggle in understanding the difference between declaration and definition, especially in the objective context.]

Build the ItemToPurchase class with the following specifications:

• Default constructor
• Public class functions (mutators & accessors)
  • SetName() & GetName() (2 pts)
  • SetPrice() & GetPrice() (2 pts)
  • SetQuantity() & GetQuantity() (2 pts)
• Private data members
  • string itemName - Initialized in default constructor to "none"
  • int itemPrice - Initialized in default constructor to 0
  • int itemQuantity - Initialized in default constructor to 0

In the .h file, I have:

#include  #include  #include 

using namespace std; class ItemToPurchase { public: void SetName(); string GetName(); void SetPrice(); int GetPrice(); void SetQuantity(); int GetQuantity(); private: string itemName = "none"; int itemPrice = 0; int itemQuantity = 0; };

In the definition .cpp file, thus far, I have:

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

class ItemToPurchase { public: void SetName() { string name; cout << "Enter the item price:" << endl; getline(cin, name); cout << endl; itemName = name; }; string GetName() {return itemName}; void SetPrice() { int price; cout << "Enter the item price:" << endl; cin >> price; cout << endl; itemPrice = price; }; int GetPrice(); void SetQuantity(); int GetQuantity(); private: string itemName = "none"; int itemPrice = 0; int itemQuantity = 0; };

And in the main, I have:

#include  #include  #include  #include "ItemToPurchase.h" using namespace std; int main() { ItemToPurchase Item; Item.SetName(); cout << Item.GetName() << endl; return 0; } 

[In main.cpp, I am just trying to construct an instance of the ItemToPurchase class (default constructors intact), and test the setter / getter functions. Once these are resolved, I should be able to extrapolate. After linking, CLion says ln 10, 11 in main.cpp have undefined references to ItemToPurchase::SetName() / GetName(), followed by what I believe to be dependent errors in the CMake. It would be substantially more helpful to me if you could help me modify / revise my existing code for proper construction, then attempt the rest.]