ilko

/*
______                                       _              _____ _ _
| ___ \                                     | |            |_   _| | |
| |_/ / __ ___   __ _ _ __ __ _ _ __ ___    | |__  _   _     | | | | | _____
|  __/ '__/ _ \ / _` | '__/ _` | '_ ` _ \   | '_ \| | | |    | | | | |/ / _ \
| |  | | | (_) | (_| | | | (_| | | | | | |  | |_) | |_| |   _| |_| |   < (_) |
\_|  |_|  \___/ \__, |_|  \__,_|_| |_| |_|  |_.__/ \__, |   \___/|_|_|\_\___/
               __/ |                              __/ |
              |___/                              |___/
*/
#include <iostream>
#include <conio.h>

using namespace std;

// Enumerate all container sizes
enum CONTAINER {
  LARGE_CONTAINER = 50,
  MEDIUM_CONTAINER = 20,
  SMALL_CONTAINER = 5,
  SINGLE_CONTAINER = 1
};

// Enumerate all ship sizes
enum SHIP {
  LARGE_SHIP = 1500,
  MEDIUM_SHIP = 1000,
  SMALL_SHIP = 500
};

void computate_boxes(SHIP ship_size) {
  // Clear Screen
  system("cls");

  // Declare number of boxes, number of containers and number of ships
  int number_of_boxes, containers, ships;

  // Get container size relatively on ship size.
  CONTAINER container_size = (ship_size == LARGE_SHIP ? LARGE_CONTAINER : ship_size == MEDIUM_SHIP ? MEDIUM_CONTAINER : ship_size == SMALL_SHIP ? SMALL_CONTAINER : SINGLE_CONTAINER);

  cout << "Enter the amount of boxes: ";
  cin >> number_of_boxes;

  // Validate Input
  !cin || number_of_boxes < 500 ? "Error: Input over 500 boxes, please!\n" : "";

  // Calculate ships and containers with the number of boxes
  ships = number_of_boxes / ship_size;
  containers = number_of_boxes / container_size;

  // Print their size
  cout << "Ships: " << ships << endl << "Containers: " << containers << endl;
}

int main() {
  // Declare ship size and choice variables for the menu
  SHIP ship_size;
  int choice;

  do {
    // Clear screen
    system("cls");

    // Main menu
    cout << "Menu: \n";
    cout << "[1] Small Ship \n";
    cout << "[2] Medium Ship \n";
    cout << "[3] Large Ship \n";
    cout << "\n[0] Exit \n";

    cout << "Enter your choice: ";
    cin >> choice;

    switch (choice) {
      case 1:
        // Set chosen ship size
        ship_size = SMALL_SHIP;
        // Call function with the ship_size
        computate_boxes(ship_size);
        break;

      case 2:
        // Set chosen ship size
        ship_size = MEDIUM_SHIP;
        // Call function with the ship_size
        computate_boxes(ship_size);
        break;

      case 3:
        // Set chosen ship size
        ship_size = LARGE_SHIP;
        // Call function with the ship_size
        computate_boxes(ship_size);
        break;
    }
    // Inform user to input something so he can get back
    // to the menu
    cout << "\nEnter a key to continue....";
    getch();

  } while(choice != 0);
  return 0;
}