ADS-assignment

#include <stdio.h> #include <stdlib.h> #include <string.h>

#define MAX_REG_LENGTH 10 #define MAX_MAKE_MODEL_LENGTH 50 #define MAX_COLOR_LENGTH 20

struct Car { char reg_number[MAX_REG_LENGTH]; char make_model[MAX_MAKE_MODEL_LENGTH]; char color[MAX_COLOR_LENGTH]; int num_owners; int reserved; float reserve_amount; struct Car* next; };

struct Car* createCar(char reg[], char model[], char clr[], int owners, int res, float res_amt) { struct Car* car = (struct Car*)malloc(sizeof(struct Car)); if (car == NULL) { printf("Memory allocation failed.\n"); exit(EXIT_FAILURE); } strcpy(car->reg_number, reg); strcpy(car->make_model, model); strcpy(car->color, clr); car->num_owners = owners; car->reserved = res; car->reserve_amount = res_amt; car->next = NULL; return car; }

void addCar(struct Car** showroom, struct Car* car) { if (*showroom == NULL) showroom = car; else { struct Car current = *showroom; while (current->next != NULL) current = current->next; current->next = car; } }

void sellCar(struct Car** showroom, char reg[]) { if (*showroom == NULL) { printf("Showroom is empty.\n"); return; } if (strcmp((showroom)->reg_number, reg) == 0) { struct Car temp = *showroom; showroom = (showroom)->next; free(temp); printf("Car with registration number %s sold successfully.\n", reg); return; } struct Car prev = NULL; struct Car current = *showroom; while (current != NULL && strcmp(current->reg_number, reg) != 0) { prev = current; current = current->next; } if (current != NULL) { prev->next = current->next; free(current); printf("Car with registration number %s sold successfully.\n", reg); } else { printf("Car with registration number %s not found.\n", reg); } }

void reserveUnreserveCar(struct Car* showroom, char reg[], float reserve_amount) { struct Car* current = showroom; while (current != NULL) { if (strcmp(current->reg_number, reg) == 0) { current->reserved = !current->reserved; current->reserve_amount = reserve_amount; printf("Car with registration number %s %s successfully.\n", reg, (current->reserved ? "reserved" : "unreserved")); return; } current = current->next; } printf("Car with registration number %s not found.\n", reg); }

void viewAllCars(struct Car* showroom) { if (showroom == NULL) { printf("Showroom is empty.\n"); } else { printf("Cars in the showroom:\n"); struct Car* current = showroom; while (current != NULL) { printf("Registration: %s, Make and Model: %s, Color: %s, Owners: %d, Reserved: %s, Reserve Amount: %.2f\n", current->reg_number, current->make_model, current->color, current->num_owners, (current->reserved ? "Yes" : "No"), current->reserve_amount); current = current->next; } } }

void viewSpecificCar(struct Car* showroom, char reg[]) { struct Car* current = showroom; while (current != NULL) { if (strcmp(current->reg_number, reg) == 0) { printf("Registration: %s, Make and Model: %s, Color: %s, Owners: %d, Reserved: %s, Reserve Amount: %.2f\n", current->reg_number, current->make_model, current->color, current->num_owners, (current->reserved ? "Yes" : "No"), current->reserve_amount); return; } current = current->next; } printf("Car with registration number %s not found.\n", reg); }

int main() { struct Car* showroom = NULL;

while (1) {
    printf("\nProgram Menu:\n");
    printf("1. Add a new car to the showroom\n");
    printf("2. Sell a car from the showroom\n");
    printf("3. Reserve/Unreserve a car in the showroom\n");
    printf("4. View all cars in the showroom\n");
    printf("5. View a specific car in the showroom\n");
    printf("6. This should be an appropriate option that you provide\n");
    printf("7. Exit the system\n");

    printf("Enter your choice: ");
    int choice;
    scanf("%d", &choice);

    if (choice == 1) {
        char reg[MAX_REG_LENGTH], model[MAX_MAKE_MODEL_LENGTH], clr[MAX_COLOR_LENGTH];
        int owners;
        printf("Enter registration number: ");
        scanf("%s", reg);
        printf("Enter make and model: ");
        scanf(" %[^\n]", model);
        printf("Enter color: ");
        scanf("%s", clr);
        printf("Enter number of owners: ");
        scanf("%d", &owners);
        struct Car* car = createCar(reg, model, clr, owners, 0, 0);
        addCar(&showroom, car);
    } else if (choice == 2) {
        char reg[MAX_REG_LENGTH];
        printf("Enter registration number of the car to sell: ");
        scanf("%s", reg);
        sellCar(&showroom, reg);
    } else if (choice == 3) {
        char reg[MAX_REG_LENGTH];
        float reserve_amount;
        printf("Enter registration number of the car to reserve/unreserve: ");
        scanf("%s", reg);
        printf("Enter reserve amount (0 to unreserve): ");
        scanf("%f", &reserve_amount);
        reserveUnreserveCar(showroom, reg, reserve_amount);
    } else if (choice == 4) {
        viewAllCars(showroom);
    } else if (choice == 5) {
        char reg[MAX_REG_LENGTH];
        printf("Enter registration number of the car to view: ");
        scanf("%s", reg);
        viewSpecificCar(showroom, reg);
    } else if (choice == 6) {
        // Additional feature implementation goes here
    } else if (choice == 7) {
        printf("Exiting the system...\n");
        break;
    } else {
        printf("Invalid choice. Please enter a number between 1 and 7.\n");
    }
}

// Free allocated memory
struct Car* current = showroom;
struct Car* next;
while (current != NULL) {
    next = current->next;
    free(current);
    current = next;
}

return 0;

}