적수네 동네 - 질문과 답변 [ 게시물 수정 ]

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염치없는 놈입니다. 기말고사 숙제로 자판기 프로그램을
짜는 것입니다. 염치 불구 하고 이렇게 올립니다.
 소스는 어케어케 구했는데 주석을 달아야 합니다. 제가 프로그래밍에
문외한 이라서...구석 좀 달아주세여. 이 소스를 약간 변형하셔도
좋구여. 제발 부탁합니다. 오늘 아침 8시까지 입니다
 부탁합니다. 
   #include <iostream.h>
#include <string.h>
#include <stdlib.h>
 //#include "machine2.h"
 typedef unsigned short int USint;
 class MACHINE
{
public:
	char input[10];
	USint get_total;
	char menus[4][20];	
	USint price[4];
	static USint LAST_MONEY;
 public:
	void MACHINE_start();
	void MACHINE_end();	
	void start();
	void show_menu();
	void set_menu();
	int select();
	void naonda(int get_select);
	bool q_again();
};
 USint MACHINE::LAST_MONEY=1;
 void MACHINE::MACHINE_start()
{
	get_total=0;
	char m[4][20]={"콜라","메실","바나나우유","사이다"};
	USint p[4]={500,550,600,700};
	for(int i=0;i<4;i++){
	strcpy(menus[i],m[i]);
	price[i]=p[i];
	}
 }
void MACHINE::MACHINE_end()
{
	LAST_MONEY=1;
	cout << "잔돈 출구" << get_total << endl;
 }
 bool MACHINE::q_again()
{
 	if(LAST_MONEY==0)
		return false;
	else return true;
}
  void MACHINE::start()
{
 	cout << "------관리자모드m:  x-나가기 -----" << endl;
	cout << "INSERT MONEY->";
	cin >> input;
}
   void MACHINE::show_menu()
{
 char *coin;
    coin=input;
  		if(0==strcmp(input,"m")){
			set_menu();
			start();
		}
  		else if(0==strcmp(input,"x")) strcpy(input,"x");
 		else{
		get_total+=atoi(coin);
		char star[4];
		if(get_total != 0 ){
		if(get_total>=price[3]){ star[0]=&#039;O&#039;;star[1]=&#039;O&#039;;star[2]=&#039;O&#039;;star[3]=&#039;O&#039;;}                //메뉴수량 추가시 보완!
		else if(get_total>=price[2]){star[0]=&#039;O&#039;;star[1]=&#039;O&#039;;star[2]=&#039;O&#039;;star[3]=&#039;X&#039;;}	
		else if(get_total>=price[1]){star[0]=&#039;O&#039;;star[1]=&#039;O&#039;;star[2]=&#039;X&#039;;star[3]=&#039;X&#039;;}
		else if(get_total>=price[0]){star[0]=&#039;O&#039;;star[1]=&#039;X&#039;;star[2]=&#039;X&#039;;star[3]=&#039;X&#039;;}
		else { star[0]=&#039;X&#039;;star[1]=&#039;X&#039;;star[2]=&#039;X&#039;;star[3]=&#039;X&#039;;}
		}		
 		for(int i=0;i<4;i++) cout << i+1 << "번 -<"<< star[i] << ">-"<< price[i] << "원 "<< menus[i] << endl;
		}
   }
   void MACHINE::set_menu()
{
	int sel;
	cout << "1-메뉴변경/2-가격변경/3-나가기 ";
	cin >> sel;
  	while(sel!=3){
 		switch(sel){
 		case 1 : {	
					cout << "새로운 메뉴를 입력해주세요";
					for(int i=0;i<4;i++){
					cout << i+1 << "------->";
					cin >> menus[i];
										}
				break;
					}
  		case 2 : {
					cout << "새로운 가격 입력";
					for(int j=0;j<4;j++){
					cout << j+1 << menus[j] << "--------->";
					cin >> price[j];
										}
				break;
					}
 		default : {
			cout << "입력이 잘못됬음";
			break;
				}
				 }
	cout << "1-메뉴변경/2-가격변경/3-나가기";
	cin >> sel;
				 }
 }
   int MACHINE::select()
{
	int sel=0;
	if(q_again()==true){
	cout << "선택=>";
	cin >> sel;
	}
	else sel=5;
  	return sel;
}
  void MACHINE::naonda(int get_select)
{
  	switch(get_select){
 	case 0 : cout << "-------------";
	case 1 : {
 		if(get_total >= price[0]){
			cout << menus[0] << "가나왔습니다!" << "잔액" << get_total-price[0] << "" ;
			get_total-=price[0];
 			break;}
		else cout << "잔액부족!"; break;
			 }
 	case 2 : {
		if(get_total >= price[1]){
			cout << menus[1] << "가나왔습니다!"<< "잔액" << get_total-price[1]<< "" ;
			get_total-=price[1];
 			break;}
		else cout << "잔액부족!"; break;
			 }
 	case 3 : {
		if(get_total >= price[2]){
			cout << menus[2] << "가나왔습니다!"<< "잔액" << get_total-price[2]<< "" ; 
			get_total-=price[2];
 			break;}
		else cout << "잔액부족!"; break;
			 }
	case 4 : {
		if(get_total >= price[3]){
			cout << menus[3] << "가나왔습니다!"<< "잔액" << get_total-price[3]<<""; 
			get_total-=price[3];
 			break;}
		else cout << "잔액부족!"<< "잔액" << get_total ; break;
			 }
 	default : {
		cout << "------"; break;	
			  }
	}
 		//----switch 문을 빠저나온후 종료 여부를 판단하기위한 if문------
   if(get_total==0 || 0==strcmp(input,"x")) LAST_MONEY=0;
  }
     void main(void)
{
 	MACHINE park,kim;
  	park.MACHINE_start();
	while(park.q_again()==true ){
	park.start();
	park.show_menu();
	park.naonda(park.select());
	}
	park.MACHINE_end();
   	kim.MACHINE_start();
	while(kim.q_again()==true ){
	kim.start();
	kim.show_menu();
	kim.naonda(kim.select());
	}
	kim.MACHINE_end();
  }