#include <stdio.h>

#define MAX_ITEM 2

#define REG_HAM_CODE 1
#define COKE_CODE 2

#define REG_HAM_PRICE 2000
#define COKE_PRICE 1000


main()
{

int flag;
int item_code;
int number;


/* print menu */

printf("\n*****************************************");
printf("\n %2d. Regular hamburger %15d", REG_HAM_CODE, REG_HAM_PRICE);
printf("\n %2d. Coke %15d", COKE_CODE, COKE_PRICE);
printf("\n*****************************************");
printf("\n Enter the item code : ");

/* input & process */

flag = scanf("%d", &item_code);
if (flag == 1) {
if ((item_code > 0) && (item_code < MAX_ITEM + 1)) {
printf(" Enter the number : ");
flag = scanf("%d", &number);

if ((flag == 1) && (number > -1)) {
if (item_code == REG_HAM_CODE) {
printf("\n Regular hamberger %d : %d\n", number, number * REG_HAM_PRICE);
}
/* more items */
else {
printf("\n Coke %d : %d\n", number, number * COKE_PRICE);
}
}
else {
printf("잘못된 입력입니다.\n");
}
}
else {
printf("잘못된 선택입니다.\n");
}
}
else {
printf("잘못된 입력입니다.\n");
}

printf("\n Bye\n");
}