명품 C++ 실습문제 4장 11번

#include <iostream>
#include <string>
#include <cstdlib>
#include <ctime>
using namespace std;

class Container{
    int size;
public:
    Container(){size =10;}
    void allfill(){ size=10;}
    void consume(){ size--;}
    int getSize(){return size;}//현재의 크기 리턴
};


class CoffeeVendingMachine{
    Container tong[3];
    void fulfill();
    void selectEspresso();
    void selectAmericano();
    void selectSugarCoffee();
    void show();
public:
    void run();
    
};

void CoffeeVendingMachine::fulfill(){
    tong[0].allfill();
    tong[1].allfill();
    tong[2].allfill();
}
void CoffeeVendingMachine::selectEspresso(){
    tong[0].consume();
    tong[1].consume();
}
void CoffeeVendingMachine::selectAmericano(){
    tong[0].consume();
    tong[1].consume();
    tong[1].consume();
}
void CoffeeVendingMachine::selectSugarCoffee(){
    tong[0].consume();
    tong[1].consume();
    tong[1].consume();
    tong[2].consume();
}

void CoffeeVendingMachine::show(){
    cout << "커피 " << tong[0].getSize() << "물 " << tong[1].getSize() << "설탕 " <<tong[2].getSize() << endl;
}

void CoffeeVendingMachine::run(){
    int num;
    cout << "****** 커피자판기를 작동합니다. *******" << endl;
    while(1){
        cout << "메뉴를 눌러주세요(1:에스프레소, 2:아메리카노, 3:설탕커피, 4:잔량보기, 5:채우기)>>";
        cin >> num ;
        if( num == 1){
            if(tong[0].getSize()<1 || tong[1].getSize()<1){
                cout << "원료가 부족합니다.\n";
            }
            else {
                cout << "에스프레소를 드세요.\n";
                selectEspresso();

            }
        }
        else if(num == 2){
            if(tong[0].getSize()<1 || tong[1].getSize()<2){
                cout << "원료가 부족합니다.\n";
            }
            else  {
                cout << "아메리카노를 드세요.\n";
                selectAmericano();
            }
        }
        else if(num == 3){
            if(tong[0].getSize()<1 || tong[1].getSize()<2 || tong[2].getSize()<1){
                cout << "원료가 부족합니다.\n";
            }
            else  {
                cout << "설탕커피를 드세요.\n";
                selectSugarCoffee();
            }
        }
        
        else if(num == 4){//잔량 보기
            show();
        }
        
        else if(num == 5){//채우기
            fulfill();
        }
    }
    
}

int main() {
    CoffeeVendingMachine c;
    c.run();
    return 0;
}