#include <stdio.h>

float getBun()
{
    /* Chilli submarine-C
    Hotdog-D
    Swarma-S
    Burger-B*/
    char bun;
    float value;
    printf("Enter your prefed bun: ");
    scanf("%c", &bun);

    if ((bun = 'c') || (bun = 'C'))
        printf("Rs. each\n");
    else if ((bun = 'd') || ('D'))
        printf("Rs. each\n");
    else if ((bun = 's') || ('S'))
        printf("Rs. each\n");
    else if ((bun = 'b') || ('B'))
        printf("Rs. each\n");
    else
        printf("invalid code\n");
    return value;
}
int getQuantity()
{
    int qty;
    printf("Enter your required quantity: ");
    scanf("%i", &qty);
    return qty;
}
float getDistence()
{
    float dis;
    printf("Enter your distance to the store from your home in Km: ");
    scanf("%f", &dis);
    getchar();
    if (dis <= 1)
        printf("Your deleviary is free\n");
    else if (dis <= 4)
        printf("Your deleviary fee=100/=\n");
    else if (dis > 4)
        printf("Your deleviary fee=200/=\n");
    return dis;
}

int main()
{
    float dis;
    int n = 0, m = 0;
    char answer;
    printf("Do you want to order another bun (Y/N): ");
    scanf("%c", &answer);
    if (n == 12)
    {
        printf("You reached the limit");
        dis = getDistence();
    }
    else
    {
        while (m < 1)
        {
            if (answer == 'n' || answer == 'N')
            {
                dis = getDistence();
                m++;
            }
            else if (answer == 'y' || answer == 'Y')
            {
                getchar();
                char _bun = getBun();
                getchar();
                int _qty = getQuantity();
                n++;
                getchar();
                printf("Do you want to order another bun (Y/N): ");
                scanf("%c", &answer);
            }
            else
            {
                printf("Wrong input!!\n");
                getchar();
                printf("Do you want to order another bun (Y/N): ");
                scanf("%c", &answer);
            }
        }
    }
    return 0;
}