Prata exs 9.9 b

#include <stdio.h>
#define UP 4
#define DOWN 1

int choice(void);

int main()
{
    int menu_ch = choice();
    printf("youve chosen %d\n",menu_ch);

    return 0;

}

int choice(void)
{
    int res_sc, c ;

    do
    {
        printf("menu 1. 2. 3. 4. \n");
        res_sc = scanf("%d",&c);
        if(!res_sc)//if c is not integer
        {
            c = 1000;
            break;
        }
    }while(c<DOWN || c>UP);


    return   c;
}