include

include

include

include

using namespace std;

class Item {

public:

    void SetName(string nm)

        { name = nm; };

    void SetQuantity(int qnty)

        { quantity = qnty; };

    void SetPrice(int prcinDllrs)

        { priceInDollars = prcinDllrs; };

    virtual void Print()

        { cout << name << " " << quantity << endl; };

    virtual ~Item()

        { return; };

    int GetTotalValueAsPrice()

        { return (quantity * priceInDollars); };

protected:

    string name;

    int    quantity;

    int   priceInDollars;

};

class Produce : public Item { // Derived from Item class

public:

    void SetExpiration(string expir)

        { expiration = expir; };

    void Print()

        { cout << name << " x" << quantity

        << " for " << priceInDollars

        << " (Expires: " << expiration << ")"

        << endl;
};

private:

    string expiration;

};

class Book : public Item {

public:

    void SetAuthor(string authr)

    { author = authr; };

    void Print()

{

    cout << name << " x" << quantity

    << " for " << priceInDollars

    << " (Author: " << author << ")"

    << endl;
};

private:

    string author;

};

class Inventory {

public:

    void PrintInventory();

    void AddItemToInventory();

    void UpdateItemQtyInInventory();

    void RemoveItemFromInventory();

private:

    void SumInv();

    vector<Item*> inventory;

    int totalInvPriceDollars;

};

// Print all items in the inventory
void Inventory::PrintInventory() {

unsigned int i = 0;

if (inventory.size() == 0) {

    cout << "No items to print." << endl;

}

else {

    for (i = 0; i<inventory.size(); ++i) {

        cout << i << " - ";

        inventory.at(i)->Print();

    }

    cout << "Total inventory value: $" << this->totalInvPriceDollars << endl;

}

return;

}

// Dialogue to create a new item, then add that item to the inventory

void Inventory::AddItemToInventory() {

Produce* prdc;

string usrInptName = "";

string usrInptQntyStr = "";

istringstream inSS;

int usrInptQnty = 0;

string usrInptExpr = "";

int usrPrice = 0;

string usrInpt = "";

string usrAuthor = "";

Book* book;


// Get user choice

cout << "\nAdd a book (b) or produce (p): ";

getline(cin, usrInpt);


if ((usrInpt.at(0) != 'b') && (usrInpt.at(0) != 'p')) {

    cout << "Invalid choice";

    return;

}


if (usrInpt.at(0) == 'p') {

    cout << "Enter name of new produce: ";

}

else {

    cout << "Enter name of new book: ";

}


getline(cin, usrInptName);


cout << "Enter quantity: ";

getline(cin, usrInptQntyStr);

inSS.str(usrInptQntyStr);

inSS >> usrInptQnty;

inSS.clear();


if (usrInpt.at(0) == 'p') {

    cout << "Enter expiration date: ";

    getline(cin, usrInptExpr);

}

else {

    cout << "Enter author: ";

    getline(cin, usrAuthor);

}


cout << "Enter the price per item: $";
cin >> usrPrice;


if (usrInpt.at(0) == 'p') {

    prdc = new Produce;

    prdc->SetName(usrInptName);

    prdc->SetQuantity(usrInptQnty);

    prdc->SetExpiration(usrInptExpr);

    prdc->SetPrice(usrPrice);


    this->inventory.push_back(prdc);

}

else {

    book = new Book;

    book->SetName(usrInptName);

    book->SetQuantity(usrInptQnty);

    book->SetAuthor(usrAuthor);

    book->SetPrice(usrPrice);


    this->inventory.push_back(book);

}

this->SumInv();

return;

}

// Dialogue to update the quantity of an item, then update that item in the inventory

void Inventory::UpdateItemQtyInInventory() {

string usrIndexChoiceStr = "";

unsigned int usrIndexChoice = 0;

istringstream inSS;

string usrInptQntyStr = "";

int usrInptQnty = 0;


if (inventory.size() == 0) {

    cout << "No items to update." << endl;

}

else {

    this->PrintInventory();


    do {

        cout << "Update which item #: ";

        getline(cin, usrIndexChoiceStr);

        inSS.str(usrIndexChoiceStr);

        inSS >> usrIndexChoice;

        inSS.clear();

    }

while (!(usrIndexChoice < inventory.size()));

    cout << "Enter new quantity: ";

    getline(cin, usrInptQntyStr);

    inSS.str(usrInptQntyStr);

    inSS >> usrInptQnty;

    inSS.clear();


    inventory.at(usrIndexChoice)->SetQuantity(usrInptQnty);

}

this->SumInv();
return;

}

// Dialogue to remove a specific item, then remove that specific item from the inventory

void Inventory::RemoveItemFromInventory() {

istringstream inSS;

string usrIndexChoiceStr = "";

unsigned int usrIndexChoice = 0;

string usrInptQntyStr = "";


if (inventory.size() == 0) {

    cout << "No items to remove." << endl;

}

else {

    this->PrintInventory();


    do {

        cout << "Remove which item #: ";

        getline(cin, usrIndexChoiceStr);

        inSS.str(usrIndexChoiceStr);

        inSS >> usrIndexChoice;

        inSS.clear();

    }

while (!(usrIndexChoice < inventory.size()));

    inventory.erase(inventory.begin() + usrIndexChoice);

}

this->SumInv();

return;

}

// Compute the inventory’s Total Price

void Inventory::SumInv() {

int total = 0;


for (int i = 0; i < inventory.size(); ++i) {

    total += inventory.at(i)->GetTotalValueAsPrice();

}

this->totalInvPriceDollars = total;


return;

}

int main() {

Inventory* inventory;

string usrInptOptn = "default";


inventory = new Inventory;


while (true) {

    // Get user choice

    cout << "\nEnter (p)rint, (a)dd, (u)pdate, (r)emove, or (q)uit: ";

    getline(cin >> ws, usrInptOptn);


    // Process user choice

    if (usrInptOptn.size() == 0) {

        continue;

    } else if (usrInptOptn.at(0) == 'p') {

        inventory->PrintInventory();

    } else if (usrInptOptn.at(0) == 'a') {

        inventory->AddItemToInventory();

    } else if (usrInptOptn.at(0) == 'u') {

        inventory->UpdateItemQtyInInventory();

    } else if (usrInptOptn.at(0) == 'r') {

        inventory->RemoveItemFromInventory();

    } else if (usrInptOptn.at(0) == 'q') {

        cout << "\nGood bye." << endl;

        break;

    }

}


return 0;

}

 

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