자료구조_c언어_서클 큐_circleQueue_02

#include <stdio.h>
#include <malloc.h>
#include <string.h>
#include <Windows.h>
 
#define EMPTY 0
 
typedef struct Node {
    char menu[30];
    int price;
    struct Node *link;
}ND;
 
ND *front = EMPTY;
ND *rear = EMPTY;
int totalMoney = 0;
 
int isEmpty();
int showMenu();
void addMenu();
void checkAll();
void orderList();
void orderFinish();
 
int main() {
    while (1) {
        system("cls");
        int select = showMenu();
        switch (select) {
        case 1:
            addMenu();
            break;
        case 2:
            checkAll();
            break;
        case 3:
            orderList();
            break;
        case 4:
            orderFinish();
            break;
        case 5:
            printf("프로그램 종료 !\n");
            exit(0);
        default:
            printf("잘못 입력 !\n");
        }
        system("pause");
    }
 
}
 
int isEmpty() {
    if (front == EMPTY && rear == EMPTY) {
        printf("메뉴 없음");
        return 1;
    }
    return 0;
}
 
void checkAll() {
    printf("총 판매액:%d원\n", totalMoney);
}
 
void orderFinish() {
    if (isEmpty())
        return;
    ND *instance = front;
    printf("메뉴 조리 완료(%s,%d원)\n", instance->menu, instance->price);
    front = instance->link;
    if (front == EMPTY)
        front = rear = EMPTY;
    totalMoney += instance->price;
    free(instance);
}
 
void orderList() {
    if (isEmpty())
        return;
    ND *instance = front;
    while (instance != EMPTY) {
        printf("메뉴명:%s,가격:%d\n", instance->menu, instance->price);
        instance = instance->link;
    }
}
 
ND *makeNode() {
    ND *instance = (ND*)malloc(sizeof(ND));
    printf("메뉴:");
    scanf("%s", instance->menu);
    printf("가격:");
    scanf("%d", &instance->price);
 
    instance->link = EMPTY;
    return instance;
}