닫아주셈;;;

/////////////////////////////////////////
//  2007년 04월 08일 고급프로그래밍  //
// Coded By 오형탁 Ohyung (2002711158) //
// ohyung@ohyung.com http://ohyung.com //
/////////////////////////////////////////

/*<<<<<<<<<헤더파일부분>>>>>>>>>>*/
#include < stdlib.h>
#include < stdio.h>
#include < string.h>


// 구조체를 만든다. ITEMS로 크게 잡고 LINK로 연결
typedef struct item{
    char name[20];
    int cost;
    struct item *next;
}ITEMS, *LINK;

LINK head = NULL; // 머리용
LINK new = NULL; // 추가용
LINK del = NULL; // 삭제용
LINK current = NULL; // 현재용

int total=0,now=0;

void insert(char *name,int cost) // NULL이 발견될때까지 노드를 찾아가다가 마지막에서 할당받고, 이름과 가격을 넣고, 마지막엔 NULL을 넣는다.
{
    current = head;
    while (current->next != NULL)
    {
        current = current->next;
    }
    new = (LINK)malloc(sizeof(ITEMS));
    current->next = new;
    new->next = NULL;
    strcpy(new->name, name);
    new->cost=cost;
    now++;
}

void menu() // 간단하게 NULL까지 증가시키면서 출력
{
    printf("-----------------------------------------------------------------------------\n\t\t\tVending Marchine\n-----------------------------------------------------------------------------\n");
    printf(":Product:| ");
    current = head;
    while (current != NULL)
    {
        printf("%8s|", current->name);
        current = current->next;
    }
    printf("\n: Price :|   ");
    current = head;
    while (current != NULL)
    {
        printf("%8d|", current->cost);
        current = current->next;
    }
    printf("\n-----------------------------------------------------------------------------\nMode Selection\n1:투입, 2:구입, 3:반환\nA.제품추가,B.제품삭제,C.제품수정\n");

}

void buy()
{
    int sel=0,sel2=0,choose=0,i=0;
    while (sel<=0||sel>now+1)
    {
        printf(" >> 제품을 선택하세요 : ");
        scanf("%d", &sel);
        fflush(stdin);
    }
    current = head;
    for(i=0;i<=sel-2;i++)
        current = current->next;

    printf(" '%s'의 수량 (개당 %d원) : ",current->name,current->cost);
    scanf("%d", &sel2);
    fflush(stdin);
    choose=current->cost;
    if (total<(choose*sel2))
        printf("* %d원이 부족합니다. 투입 또는 반환을 선택하세요.\n",(choose*sel2)-total);
    else
    {
        total-=(choose*sel2);
        printf(" 현재 남아있는잔액 : %d원\n",total);
    }
}

void main()
{
    int i_money=0,i=0,j=0,sel=0,sel2=0,choose=0,temp=0,i_cost=0;
    char i_mode='0',i_item[20],i_mitem[20];

    // 초기 세팅
    new = (LINK)malloc(sizeof(ITEMS));
    new->next = head;
    head = new;
    strcpy(new->name, "Milk Coffee");
    new->cost = 400;
    insert("Orange",500);
    insert("Coke",400);

    //메뉴 호출
    menu();

    //루프내에서 메뉴선택
    while(1)
    {
        printf(">>Select the mode : ");
        gets(&i_mode);

        if(i_mode=='1') // 코인넣고 바이
        {
          printf(" >> Insert the Coin : ");
            scanf("%d", &i_money);
            fflush(stdin);
            total+=i_money;
            buy();
        }
        else if(i_mode=='2') // 노말한 바이
        {
            buy();
        }
        else if(i_mode=='3') // 종료함.
        {
            printf("%d원 반환완료. Vending Machine을 종료합니다.\n",total);
            exit('0');
        }
        else if(i_mode=='a' || i_mode=='A') // 입력부
        {
            temp=now;
            printf(" >> 추가제품명 : ");
            gets(&i_item);
            current = head;
            while (current != NULL)
            {
                if(strcmp(i_item,current->name)==0)
                {
                        printf("기존에 있던 제품명과 동일합니다.\n");
                        temp=-1;
                        break;
                }
                current = current->next;
            }
            if(temp!=-1)
            {
                printf(" >> 가격 : ");
                scanf("%d",&i_cost);
                fflush(stdin);
                insert(&i_item,i_cost);
            }
            menu();
        }
        else if(i_mode=='b' || i_mode=='B') // 삭제부
        {
            printf(" >> 삭제할 제품명 : ");
            gets(&i_item);
            temp=now;
            current = head;
            while (current != NULL)
            {
                if(strcmp(i_item,current->name)==0)
                {
                    temp--;
                    break;
                }
                del=current;
                current = current->next;
            }    
            if (temp==now) // 미발견시
                printf("그런 제품명은 없습니다.\n");
            else //발견 했다면면
            {
                if(current==head)
                {
                    head=current->next;
                    free(current);
                }
                else 
                {
                    del->next=current->next;
                    free(current);
                }
                now--;
            }
            menu();
        }
        else if(i_mode=='c' || i_mode=='C') // 수정부
        {
            temp=now; //원래 now의 값을 temp에 임시저장
    
            printf(" >> 수정할 제품명 : ");
            gets(&i_item);

            current = head;
            while (current != NULL)
            {
                if(strcmp(i_item,current->name)==0)
                {
                    temp--;
                    break;
                }
                current = current->next;
            }            
            if (temp==now)
                printf("그런 제품명은 없습니다.\n");
            else
            {
                printf(" >> 수정될 제품명 : ");
                gets(&i_mitem);
                
                current = head;
                while (current != NULL)
                {
                    if(strcmp(i_mitem,current->name)==0)
                    {
                            printf("기존에 있던 제품명과 동일합니다.\n");
                            temp=-1;
                            break;
                    }
                    current = current->next;
                }
                if(temp!=-1)
                {
                    temp=now;
                    current = head;
                    while (current != NULL)
                    {
                        if(strcmp(i_item,current->name)==0)
                        {
                            temp--;
                            break;
                        }
                        current = current->next;
                    }
                    printf(" >> 가격 : ");
                    scanf("%d",&i_cost);
                    fflush(stdin);
                    strcpy(current->name, i_mitem);
                    current->cost=i_cost;
                }
            }
            menu();
        }
        i_mode=0;
    }
}

닫아주셈;;;