CS 301p- Assignment 1
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| CS 301p- Assignment 1 |
Solution:
#include <iostream>
using namespace std;
class Node {
private:
string name;
int id;
int quantity;
double price;
Node* next;
public:
string getName() {
return name;
}
int getId() {
return id;
}
int getQuantity() {
return quantity;
}
double getPrice() {
return price;
}
Node* getNext() {
return next;
}
void setName(string name) {
this->name = name;
}
void setId(int id) {
this->id = id;
}
void setQuantity(int quantity) {
this->quantity = quantity;
}
void setPrice(double price) {
this->price = price;
}
void setNext(Node* next) {
this->next = next;
}
};
class Inventory {
private:
Node* head;
public:
Inventory() {
head = NULL;
}
void addProduct(string name, int id, int quantity, double price) {
Node* newNode = new Node();
newNode->setName(name);
newNode->setId(id);
newNode->setQuantity(quantity);
newNode->setPrice(price);
newNode->setNext(NULL);
if (head == NULL) {
head = newNode;
} else {
Node* current = head;
while (current->getNext() != NULL) {
current = current->getNext();
}
current->setNext(newNode);
}
cout << "Product added to inventory." << endl;
}
void removeProduct(int id) {
if (head == NULL) {
cout << "Inventory is empty." << endl;
return;
}
if (head->getId() == id) {
Node* temp = head;
head = head->getNext();
delete temp;
cout << "Product removed from inventory." << endl;
return;
}
Node* current = head;
Node* prev = NULL;
while (current != NULL && current->getId() != id) {
prev = current;
current = current->getNext();
}
if (current == NULL) {
cout << "Product not found in inventory." << endl;
return;
}
prev->setNext(current->getNext());
delete current;
cout << "Product removed from inventory." << endl;
}
void updateProduct(int id, int quantity, double price) {
Node* current = head;
while (current != NULL && current->getId() != id) {
current = current->getNext();
}
if (current == NULL) {
cout << "Product not found in inventory." << endl;
return;
}
current->setQuantity(quantity);
current->setPrice(price);
cout << "Product updated." << endl;
}
void displayInventory() {
if (head == NULL) {
cout << "Inventory is empty." << endl;
return;
}
Node* current = head;
cout << "Inventory:" << endl;
cout << "-----------------------------------------" << endl;
cout << "Product Name\tID\tQuantity\tPrice" << endl;
cout << "-----------------------------------------" << endl;
while (current != NULL) {
cout << current->getName() << "\t\t"
<< current->getId() << "\t"
<< current->getQuantity() << "\t\t"
<< current->getPrice() << endl;
current = current->getNext();
}
cout << "-----------------------------------------" << endl;
}
};
int main() {
Inventory inventory;
int choice;
do {
cout << "========= Inventory Management =========" << endl;
cout << "1. Add a product" << endl;
cout << "2. Remove a product" << endl;
cout << "3. Update a product" << endl;
cout << "4. Display inventory" << endl;
cout << "5. Exit" << endl;
cout << "Enter your choice: ";
cin >> choice;
switch (choice) {
case 1: {
string name;
int id, quantity;
double price;
cout << "Enter product name: ";
cin.ignore();
getline(cin, name);
cout << "Enter product ID: ";
cin >> id;
cout << "Enter product quantity: ";
cin >> quantity;
cout << "Enter product price: ";
cin >> price;
inventory.addProduct(name, id, quantity, price);
break;
}
case 2: {
int id;
cout << "Enter product ID to remove: ";
cin >> id;
inventory.removeProduct(id);
break;
}
case 3: {
int id, quantity;
double price;
cout << "Enter product ID to update: ";
cin >> id;
cout << "Enter new quantity: ";
cin >> quantity;
cout << "Enter new price: ";
cin >> price;
inventory.updateProduct(id, quantity, price);
break;
}
case 4:
inventory.displayInventory();
break;
case 5:
cout << "Exiting program." << endl;
break;
default:
cout << "Invalid choice. Please try again." << endl;
}
cout << endl;
} while (choice != 5);
return 0;
}
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