입장권 계산 프로그램

miniProject01\ticket.java

/*
 작성자: 고지민
*/
//놀이동산 입장권 계산 프로그램
import java.util.*;
public class Main {
    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        System.out.println("[입장권 계산]");
        int age=check_int("나이를 입력해 주세요.(숫자):",input,1);
        int time=check_int("입장시간을 입력해 주세요.(숫자입력):",input,0,24);
        boolean merit = check_char("국가유공자 여부를 입력해 주세요.(y/n):",input);
        boolean hasCard = check_char("복지카드 여부를 입력해 주세요.(y/n):",input);
        input.close();
        System.out.printf("입장료: %d",entry_fee(age,time,merit,hasCard));
    }
    public static int check_int(String message,Scanner input,int min){// 최솟값 제한
        int value;
        try {
            System.out.print(message);
            value=input.nextInt();
            if(value<min){
                throw new Exception();
            }
            return value;
        }catch (Exception e){
            System.out.println("다시입력해 주세요.");
            return check_int(message, input,min);
        }

    }
    public static int check_int(String message,Scanner input,int min,int max){// min/ max 최소 /최댓값 제한
        int value;
        try {
            System.out.print(message);
            value = input.nextInt();
            if(value<min||value>max){
                throw new Exception();
            }
            return value;
        }catch (Exception e){
            System.out.println("다시입력해 주세요.");
            return check_int(message, input,min,max);
        }
    }
    public static boolean check_char(String message,Scanner input) {// 입력값 char check
        char value = ' ';
        try {
            System.out.print(message);
            value=input.next().charAt(0);
            if(value!='y' && value!='n'){
                throw new Exception();
            }
        }catch (Exception e){
            System.out.println("다시입력해 주세요.");
            return check_char(message, input);
        }
        return value=='y'? true:false;
    }
    public static int entry_fee(int age, int time, boolean service,boolean card){//입장권
        int pay= 10000;
        if (age<3){
            pay=0;
            return pay;
        }
        if(time>=17 || age<13){
            pay=4000;
            return pay;
        }
        if(service||card){
            pay=8000;
            return pay;
        }
        return pay;
    }
}