[열혈C++] 단계별 OOP 프로젝트 1단계

 info.h

typedef struct bank
{
    int no;
    int id;
    int money;
    char name[100];
    struct bank *prev;
    struct bank *next;
} Bank;
 
typedef struct LIST
{
    struct bank *head,*tail;
} List;
 
void init(List *list);
void insert_id(List *list);
void insert_money(List *list);
void out_money(List *list);
void print_info(List *list);
int menu_select();
Bank *serach_id(List *list,int id);
 
 

func.cpp

#include <iostream>
#include <stdlib.h>
#include "info.h"
 
using namespace std;
 
int count_id = 0;
 
void init(List *list)
{
    list->head = NULL;
    list->tail = NULL;
}
 
int menu_select()
{
    int select;
    cout << "-----Menu-----" << endl;
    cout << "1. 계좌개설" << endl;
    cout << "2. 입 금 " << endl;
    cout << "3. 출 금 " << endl;
    cout << "4. 계좌정보 출력" << endl;
    cout << "5. 프로그램 종료" << endl;
    cout << "선택: ";
 
    cin >> select;
 
    cout << "\n\n";
 
    if(select < 1 && select > 5)
    {
        cout << "존재하지 않는 메뉴입니다.\n다시 입력 해주세요.\n" << endl;
        menu_select();
    }
 
    return select;
}
 
void insert_id(List *list)
{
    Bank *new_id = (Bank*)malloc(sizeof(Bank));
 
    cout << "[계좌 개설]" << endl;
    cout << "계좌ID: ";
    cin >> new_id->id;
    cout << "이름: ";
    cin >> new_id->name;
    cout << "입금액: ";
    cin >> new_id->money;
    new_id->no = ++count_id;
    
    cout << "\n";
    
    
    if(serach_id(list,new_id->id))
    {
        cout << "존재하는 아이디입니다.\n\n" << endl;
        return ;
    }
 
    if(list->tail != NULL)
    {
        list->tail->next = new_id;
        new_id->prev = list->tail;
        list->tail = new_id;
    }
    else
    {
        list->tail = new_id;
        list->head = new_id;
    }
 
}
 
void insert_money(List *list)
{
    Bank *insert_money;
    
    int input_id,money;
    
    cout << "[입 금]" << endl;
    cout << "계좌ID: ";
    cin >> input_id;
    cout << "입금액: ";
    cin >> money;
    
    insert_money = serach_id(list,input_id);
 
    if(insert_money)
    {
            insert_money->money += money;
            cout << "입금완료" << endl << endl;
    }
    else    
    {
        cout << "존재하지 않는 계좌입니다.\n" << endl;
        return ;
    }
 
}
 
void out_money(List *list)
{
    Bank *out_money;
    int input_id,money;    
            
    cout << "[출 금]" << endl;
    cout << "계좌ID: ";
    cin >> input_id;
    cout << "출금액: ";
    cin >> money;
 
    
    out_money = serach_id(list,input_id);
 
    if(out_money)
    {
        if(out_money->money < money)
        {
            cout << "[+] 현재잔액: " << out_money->money << " 원" << endl;
            cout << "잔액이 부족합니다\n" << endl;
            return;
        }
        out_money->money -= money;
        cout << "출금완료\n" << endl;
    }
    else
    {
        cout << "존재하지 않는 계좌입니다.\n" << endl;
        return ;
    }
 
}
void print_info(List *list)
{
    Bank *info = list->head;
    
    if(info == NULL)
    {
        cout << "등록된 계좌가 존재하지 않습니다.\n" << endl;
        return ;
    }
    
    cout << "----------아이유은행 계좌정보----------\n" << endl;
 
    while(info !=NULL)
    {
        cout << "Num: " << info->no << endl;
        cout << "계좌ID: " << info->id << endl;
        cout << "이름: " << info->name << endl;
        cout << "잔액: " << info->money << endl << endl;
        
        info = info->next;
    }
    
    cout << "------아이유은행 계좌정보 출력완료------\n" << endl;
 
}
 
Bank *serach_id(List *list,int id)
{
    Bank *serach = list->head;
    
    if(serach == NULL)
    {
        cout << "등록된 계좌가 존재하지 않습니다.\n" << endl;
        return 0;
    }
 
    while(serach != NULL)
    {
        if(serach->id == id)
            return serach;
        serach = serach->next;
    }
 
    return 0;
}
 
 
 

main.cpp

#include "info.h"
 
 
int main(int argc,char *argv[])
{
    int select;
    List list;
 
    init(&list);
 
    while(1)
    {
        select = menu_select();
    
        switch(select)
        {
            case 1:
                insert_id(&list);
                break;
            case 2:
                insert_money(&list);
                break;
            case 3:
                out_money(&list);
                break;
            case 4:
                print_info(&list);
                break;
            case 5:
                exit(0);
                break;        
        }
    }
 
    return 0;
 
}