便利店小程序Plus

总阅读量次

问题描述

版本一请参见

---

问题分析

采用Goods（货物类）、Basket（购物车类）和Store（商店类）完成设计
各类的类图如下：



各类之间的关系如下：

Basket ->(依赖） Goods 、Store ->（依赖） Basket

---

流程图

---

源代码

//fun.h
#include <vector>

using namespace std;

class Goods{
    char* name;
    float price;
public:
    Goods();
    Goods(char* name,float price);
    char* getName();
    void setName(char* name);
    float getPrice();
    void setPrice(float price);
};

class Basket{
    vector<Goods> goodsList;
public:
    void addGoods(Goods item);
    void cleanBasket();
    float getTotalPrice();
    bool isEmpty();
    vector<Goods> getGoodsList();
};


class Store{
    Goods goods;
    Basket basket;
public:
    char* msg_Header = "*************************************************\n        Xiao Fang  Conveniences Store\n*************************************************\n";
    char* msg_Footer = "-------------------------------------------------\n";
    void start();
    void ending();
    void checkout();
    void addGoods(int item);
    void displayMenu();
    void invalidInput();
};

//fun.cpp
#include "fun.h"
#include <iostream>
#include <vector>

using namespace std;

Goods::Goods(){};

Goods::Goods(char* name,float price){
    this->name = name;
    this->price = price;
}

char* Goods::getName(){
    return name;
}

void Goods::setName(char* name){
    this->name = name;
}

float Goods::getPrice(){
    return price;
}

void Goods::setPrice(float price){
    this->price = price;
}

void Basket::addGoods(Goods item){
    goodsList.push_back(item);
}

void Basket::cleanBasket(){
    vector<Goods> temp;
    goodsList = temp;
}

float Basket::getTotalPrice(){
    vector<Goods>::iterator it;
    float sum = 0.0;
    for(it = goodsList.begin(); it != goodsList.end();it++){
        Goods temp = *it;
        sum += temp.getPrice();
    }

    return sum;
}

bool Basket::isEmpty(){
    vector<Goods>::iterator itb,ite;
    itb = goodsList.begin();
    ite = goodsList.end();
    if(itb == ite)
        return true;
    else
        return false;
}

vector<Goods> Basket::getGoodsList(){
    return goodsList;
}

void Store::start(){
    cout << "Welcome Xiao Fang's Convince!" << endl << endl;
    cout << "Please Press Any To Enter The Store:  ";
    char ch = getchar();
    system("cls");
}

void Store::ending(){
    system("cls");
    cout << "Bye Bye!" << endl <<endl;
    cout << "Welcome to here next!" <<endl;
}

void Store::checkout(){
    system("cls");
    cout << "=================== Check out ===================" << endl << endl;
    vector<Goods>::iterator it;
    vector<Goods> t = basket.getGoodsList();
    for(it = t.begin(); it != t.end();it++){
        Goods temp = *it;
        cout << "\t" << temp.getName() << "\t$ " << temp.getPrice() << endl;
    }
    cout <<"================================================" << endl;
    cout <<"TOTAL: "<< basket.getTotalPrice() << endl;
    cout << "Thanks!" << endl;
    system("pause");
    system("cls");
}

void Store::addGoods(int item){
    system("cls");
    Goods temp("Bread",1.0);
    switch(item){
        case 1:break;
        case 2:temp.setName("Cocacola");break;
        case 3:temp.setName("Beer");break;
        case 4:temp.setName("Chocolate");break;
        case 5:temp.setName("Pencil");temp.setPrice(0.5);break;
        case 6:temp.setName("Notebook");temp.setPrice(3.0);break;
        default:break;
    }
    basket.addGoods(temp);
}

void Store::displayMenu(){

    cout << msg_Header << endl;
    cout << " (1) Bread                            1.0" << endl;
    cout << " (2) Cocacola                         1.0" << endl;
    cout << " (3) Beer                             1.0" << endl;
    cout << " (4) Chocolate                        1.0" << endl;
    cout << " (5) Pencil                           0.5" << endl;
    cout << " (6) Notebook                         3.0" << endl<<endl;
    cout << " (9) CHECK OUT " << endl;
    cout << " (0) EXIT " << endl;
    cout << msg_Footer ;
    cout << " PLEASE SELECT A NUMBER: ";
}

void Store::invalidInput(){
    system("cls");
    cout <<"Invalid Input,Please Try Again!" << endl;
}

//main.cpp
#include <iostream>
#include <vector>
#include <string>
#include "fun.h"

using namespace std;

int main()
{
    system("title Xiao Fang  Conveniences Store ");
    system("mode con cols=50 lines=17");
    system("color F5");
    Store s;
    s.start();
    bool flag1 = true;
    do{
    bool flag2 = true;
    bool flag3 = true;
    char ch;
    s.displayMenu();
    string str = "You Have Selected ";
    cin >> ch;
    switch(ch){
        case '1':str += "[Bread], $1.0";s.addGoods(1);break;
        case '2':str += "[Cocacola], $1.0";s.addGoods(2);break;
        case '3':str += "[Beer], &1.0";s.addGoods(3);break;
        case '4':str += "[Chocolate], &1.0";s.addGoods(4);break;
        case '5':str += "[Pencil], $0.5";s.addGoods(5);break;
        case '6':str += "[Notebook], $3.0";s.addGoods(6);break;
        case '9':s.checkout();flag2 = false;break;
        case '0':s.ending();flag1 = false;break;
        default:s.invalidInput();flag3 = false;break;
    }
    if(flag1 && flag2 && flag3)
    cout << str << endl;
    }while(flag1);


    return 0;
}

---

测试

开始功能测试：

菜单功能测试：

购买功能测试（只测试一种）：

结算功能测试：

错误输入功能测试：

退出功能测试：

---

赏

感谢支持

支付宝

微信