Chapter3_Logic_Ex4

import java.util.Scanner;
/*  ==================================================
      Chapter 3: Logical and conditional expressions

        Ex4: Library Subscription
    ===================================================
*/

public class MyProgram {
    public static void main(String[] args) {

        //variables
        final int ADULT =5;
        final int CHILD =3;
        final int MAX_LOAN=1;

        int userInput;
        char answer;
        int borrowedBooks;
        Scanner s=new Scanner(System.in);

        //user input
        System.out.print("1. Adult\n2. Child\nwhich subscription do you have? ");
        userInput=s.nextInt();
        System.out.print("how many borrowed books you have currently? ");
        borrowedBooks=s.nextInt();

        //if there are books borrowed -check the subscription type (adult/child)
        if(borrowedBooks>0){

            if(userInput==1 && borrowedBooks>=ADULT) //Adult type can not borrow more than 5
                System.out.println("you cant borrow more than "+ADULT+" books!");
            else if(userInput==2 && borrowedBooks>=CHILD)   //child type can not borroe more than 3
                System.out.println("you cant borrow more than "+CHILD+" books!");

            else{
                //if within limits check if loan time valid
                System.out.print("is one of the books you borrowed longer than "+MAX_LOAN+" month? (y/n)");
                answer=s.next().charAt(0);
                if(answer=='y')
                    System.out.println("you can not borrow while one of the borrowed books loan period is more than 1 month");
                else
                    System.out.println("you can borrow a book");
            }
        }

    }
}