노재경_Homework4

//노재경

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        boolean flag = true;
        Scanner scanner = new Scanner(System.in);
        int price = 0;
        int cashback = 0;
        int cashbackRounded = 0;

        while(flag){
            System.out.println("[캐시백 계산]");
            System.out.print("숫자를 입력하세요. (금액): ");
            
            if(scanner.hasNextInt()){
                price = scanner.nextInt();
                scanner.nextLine();
                
                cashback = 0;
                cashbackRounded = 0;

                if(price >=1000){
                    cashback = (int) (price * 0.1);
                    cashbackRounded = Math.round(cashback/100) * 100;
                    if(cashbackRounded > 300){
                        cashbackRounded = 300;
                    }
                }
                String result = String.format("결제 금액은 %d원이고, 캐시백은 %d원 입니다.\t", price, cashbackRounded);
                System.out.println(result);
            } else {
                String input = scanner.nextLine();
                System.out.println(input);
                if (input.equals("stop")) {
                    System.out.println("시스템을 종료합니다.");
                    flag = false;
                } else {
                    System.out.println("정수만 입력해주세요.");
                }
            }
        }
        scanner.close();
    }
}