Вычислить стоимость овощей

#include <stdio.h>
 
#define F_ARTI 1.25
#define F_BEET 0.65
#define F_CARROT 0.89
 
#define DISCONT 0.25
 
#define DISCCOST 100.0
 
#define DELLIM_1 5
#define DELLIM_2 20
 
#define DELCOST_1 3.5
#define DELCOST_2 10.0
#define DELCOST_3 8.0
#define DELCOST_3PL 0.10
 
int main(void)
{
    char ch;
    double cost;
    double sumcost;
    double discont;
    double delivery;
    double weight;
    double price;
    printf("Enter, what do you want\n");
    printf(" artishock - 'a'\n beet - 'b' carrot -'c'\n for out - 'q'\n");
    while((ch = getchar()) !='q')
    {
        switch(ch)
        {
        case 'a':
            printf("Enter, how many artischocks do you want\n");
            price =F_ARTI;
        break;
        case 'b':
            printf("Enter, how many beet do you want\n");
            price =F_BEET;
        break;
        case 'c':
            printf("Enter, how many carrot do you want?\n");
            price =F_CARROT;
        break;
        default:
            printf("NON CORRECT\n");
        continue;
        }
        scanf_s("%lf", &weight);
        cost =price *weight;
        
        if(weight<=DELLIM_1)
        delivery =DELCOST_1;
        if(weight>DELLIM_1 && weight<=DELLIM_2)
        delivery =DELCOST_2;
        if(weight>DELLIM_2)
        delivery =DELCOST_3+(weight*DELCOST_3PL);
 
        if(cost>=DISCCOST)
            discont =DISCONT*weight;
        else
            discont =0;
        
        sumcost =(cost-discont)+delivery;
 
        printf("weight        price        cost        delivery        sumcost\n");
        printf(" %.2lf        %.2lf        %.2lf        %.2lf           %.2lf\n");
        printf("Enter anouther choise\n");
    }
    return 0;
}