Hotel_mangement_system.c

#include <stdio.h>
#include <stdbool.h>

#define NUM_ROOMS 10
#define MAX_ITEMS 5

void initializeRooms(int roomNumbers[], bool isBooked[], int numRooms) {
	int i;
    for (i = 0; i < numRooms; i++) {
        roomNumbers[i] = i + 1;
        isBooked[i] = false;
    }
}

void displayRooms(int roomNumbers[], bool isBooked[], int numRooms) {
	int i;
    printf("Room Status:\n");
    for (i = 0; i < numRooms; i++) {
        printf("Room %d: %s\n", roomNumbers[i], isBooked[i] ? "Booked" : "Available");
    }
}

void bookRoom(int roomNumbers[], bool isBooked[], int numRooms, int roomNumber) {
    if (roomNumber < 1 || roomNumber > numRooms) {
        printf("Invalid room number.\n");
        return;
    }

    if (isBooked[roomNumber - 1]) {
        printf("Room %d is already booked.\n", roomNumber);
    } else {
        isBooked[roomNumber - 1] = true;
        printf("Room %d has been booked.\n", roomNumber);
    }
}

void displayMenu(char *items[], float prices[], int numItems) {
	int i;
    printf("Menu:\n");
    for (i = 0; i < numItems; i++) {
        printf("%d. %s - $%.2f\n", i + 1, items[i], prices[i]);
    }
}

float calculateTotal(float prices[], int quantities[], int numItems) {
    float total = 0;
    int i;
    for (i = 0; i < numItems; i++) {
        total += prices[i] * quantities[i];
    }
    return total;
}

int main() {
    int roomNumbers[NUM_ROOMS];
    bool isBooked[NUM_ROOMS];
    initializeRooms(roomNumbers, isBooked, NUM_ROOMS);

    char *menuItems[MAX_ITEMS] = {"Burger", "Pizza", "Pasta", "Salad", "Fries"};
    float itemPrices[MAX_ITEMS] = {5.99, 8.99, 6.49, 4.99, 2.99};
    int quantities[MAX_ITEMS] = {0};

    int numRooms = sizeof(roomNumbers) / sizeof(roomNumbers[0]);
    int numItems = sizeof(menuItems) / sizeof(menuItems[0]);

    int choice;
	int roomNumber, quantity;

    do {
        printf("\nHotel Management and Order System\n");
        printf("1. Room Management\n");
        printf("2. Order Food\n");
        printf("3. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                printf("\nRoom Management\n");
                printf("1. Display Room Status\n");
                printf("2. Book a Room\n");
                printf("Enter your choice: ");
                scanf("%d", &choice);

                switch (choice) {
                    case 1:
                        displayRooms(roomNumbers, isBooked, numRooms);
                        break;
                    case 2:
                        printf("Enter the room number to book: ");
                        scanf("%d", &roomNumber);
                        bookRoom(roomNumbers, isBooked, numRooms, roomNumber);
                        break;
                    default:
                        printf("Invalid choice. Please try again.\n");
                }
                break;
            case 2:
                printf("\nHotel Order System\n");
                displayMenu(menuItems, itemPrices, numItems);
                printf("%d. Checkout\n", numItems + 1);
                printf("Enter your choice: ");
                scanf("%d", &choice);

                if (choice >= 1 && choice <= numItems) {
                    printf("Enter the quantity for %s: ", menuItems[choice - 1]);
                    scanf("%d", &quantity);
                    quantities[choice - 1] += quantity;
                } else if (choice == numItems + 1) {
                    float total = calculateTotal(itemPrices, quantities, numItems);
                    printf("\nReceipt:\n");
                    int i;
                    for (i = 0; i < numItems; i++) {
                        if (quantities[i] > 0) {
                            printf("%s x%d - $%.2f\n", menuItems[i], quantities[i], itemPrices[i] * quantities[i]);
                        }
                    }
                    printf("Total: $%.2f\n", total);
                printf("Thank you for your order!\n");
                } else {
                    printf("Invalid choice. Please try again.\n");
                }
                break;
            case 3:
                printf("Exiting the program.\n");
                break;
            default:
                printf("Invalid choice. Please try again.\n");
        }
    } while (choice != 3);

    return 0;
}