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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. // Define the inventory class
  5. class Inventory {
  6. private:
  7.     unordered_map<string, int> items; // Hash table to store items and their quantities
  8.     int total_inventory; // Total inventory count
  9.  
  10. public:
  11.     // Constructor
  12.     Inventory() {
  13.         total_inventory = 0;
  14.     }
  15.  
  16.     // Add an item to the inventory
  17.     void add_item(string item_name, int quantity) {
  18.         if (items.find(item_name) == items.end()) {
  19.             // If the item doesn't exist in the inventory, add it
  20.             items[item_name] = quantity;
  21.             total_inventory += quantity;
  22.         } else {
  23.             // If the item already exists, update its quantity
  24.             int old_quantity = items[item_name];
  25.             items[item_name] = old_quantity + quantity;
  26.             total_inventory += quantity;
  27.         }
  28.     }
  29.  
  30.     // Remove an item from the inventory
  31.     void remove_item(string item_name, int quantity) {
  32.         if (items.find(item_name) != items.end()) {
  33.             // If the item exists in the inventory, update its quantity
  34.             int old_quantity = items[item_name];
  35.             if (old_quantity > quantity) {
  36.                 items[item_name] -= quantity;
  37.                 total_inventory -= quantity;
  38.             } else {
  39.                 // If the quantity to remove is greater than the current quantity, remove the item completely
  40.                 items.erase(item_name);
  41.                 total_inventory -= old_quantity;
  42.             }
  43.         }
  44.     }
  45.  
  46.     // Check the quantity of a specific item in the inventory
  47.     int check_quantity(string item_name) {
  48.         if (items.find(item_name) != items.end()) {
  49.             // If the item exists in the inventory, return its quantity
  50.             return items[item_name];
  51.         } else {
  52.             // If the item doesn't exist in the inventory, return 0
  53.             return 0;
  54.         }
  55.     }
  56.  
  57.     // Display the total inventory count
  58.     int get_total_inventory() {
  59.         return total_inventory;
  60.     }
  61. };
  62.  
  63. int main() {
  64.     Inventory site_inventory;
  65.  
  66.     // Add items to the inventory
  67.     site_inventory.add_item("T-shirt", 100);
  68.     site_inventory.add_item("Shoes", 50);
  69.     site_inventory.add_item("Book", 30);
  70.  
  71.     // Remove items from the inventory
  72.     site_inventory.remove_item("T-shirt", 30);
  73.     site_inventory.remove_item("Book", 15);
  74.  
  75.     // Check the quantity of specific items
  76.     cout << "Quantity of T-shirt: " << site_inventory.check_quantity("T-shirt") << endl;
  77.     cout << "Quantity of Shoes: " << site_inventory.check_quantity("Shoes") << endl;
  78.     cout << "Quantity of Book: " << site_inventory.check_quantity("Book") << endl;
  79.  
  80.     // Display the total inventory count
  81.     cout << "Total inventory: " << site_inventory.get_total_inventory() << endl;
  82.  
  83.     return 0;
  84. }
Success #stdin #stdout 0.01s 5272KB
comments (?)
stdin 
Standard input is empty
stdout 
Quantity of T-shirt: 70
Quantity of Shoes: 50
Quantity of Book: 15
Total inventory: 135
https://ideone.com/YekV1M
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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