Presentation 2 Home work

package pres_2;

import java.util.Scanner;

public class questions {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner s = new Scanner(System.in);


		/*question 1 teshlom vaad bayt*/

		int numOfNight;
		int doplex;
		int rooms;
		System.out.println("Enter number of rooms");
		rooms = s.nextInt();
		System.out.println("Enter number of nights");
		numOfNight = s.nextInt();
		switch(rooms)
		{
		case 3:
			System.out.println("your cost is "+numOfNight*120);
			break;
		case 4:
			System.out.println("your cost is "+numOfNight*150);
			break;
		case 5:
			System.out.println("doplex:1 \n standart:2");
			doplex = s.nextInt();
			if(doplex == 1)
			{
				System.out.println("your cost is "+numOfNight*200);
			}
			else
			{
				System.out.println("your cost is "+numOfNight*180);
			}
			break;
		}



		/*question 2 sale*/

		double pay;
		int stuffs;
		double sum1,sum2;
		System.out.println("Enter the sum of your payment");
		pay = s.nextDouble();
		System.out.println("Enter number of your stuffs");
		stuffs = s.nextInt();
		if(pay >= 300 && stuffs < 3)
		{
			sum1 = pay - 50;
			System.out.println("price is : "+ sum1);
			System.out.println("we use the first sale");
		}
		if(pay >= 300 &&  stuffs >= 3 )
		{
			sum1 = pay - 50;
			sum2 = pay * 80 / 100 ;
			if(sum1 > sum2)
			{
				System.out.println("price is : "+ sum2);
				System.out.println("we use the secound sale");
			}
			else
			{
				System.out.println("price is : "+ sum1);
				System.out.println("we use the first sale");
			}
		}
		if(pay < 300 && stuffs >= 3)
		{
			sum2 = pay * 80 / 100 ;
			System.out.println("price is : "+ sum2);
			System.out.println("we use the secound sale");
		}



		/*question 3 grades*/

		int attendance ;
		int middleExamGrade ;
		int examGrade ;
		int hwGrade;
		double temp,finalgrade;

		System.out.println("Enter your presence");
		attendance = s.nextInt();

		if(attendance >= 80)
		{
			System.out.println("Enter your exam grade");
			examGrade =s.nextInt();
			if(examGrade >= 60)
			{
				System.out.println("Enter your first grade");
				middleExamGrade = s.nextInt();
				System.out.println("enter your homework grade");
				hwGrade = s.nextInt();

				if(middleExamGrade > examGrade)
				{
					temp = middleExamGrade * 0.2 + examGrade * 0.8;
				}
				else
				{
					temp = examGrade ;
				}
				finalgrade = 0.1 * hwGrade + 0.9 * temp;
			}
			else
			{
				finalgrade = examGrade;
			}
		}
		else
		{
			finalgrade = 0;
		}
		System.out.println("Your final grade is : "+finalgrade);




		/*question 4 Income Tax*/

		int salary;
		char teen;
		int children;
		char adress;
		double tax;

		System.out.println("Enter your salary");
		salary = s.nextInt();
		System.out.println("do you teenager ? N/Y");
		teen = s.next().charAt(0);
		System.out.println("Enter your chlidren number");
		children = s.nextInt();
		System.out.println("do you live near loglebar ? N/Y");
		adress =s.next().charAt(0);

		if(salary < 5000)
		{
			tax=0;
		}
		else if(salary >= 5000 && salary <= 10000)
		{
			tax = 0.1 * salary;
		}
		else if(salary >= 10000 && salary <= 15000)
		{
			tax = 0.35 * salary;
		}
		else
		{
			tax = 0.5 * salary;
		}
		if(teen == 'N' || teen == 'n')
		{
			if((adress == 'y' || adress == 'Y') && salary > 10000)
			{
				tax -= 400;
			}
			if(children > 3)
			{
				tax -= 900;
			}
			else
			{
				tax -= 300 * children;
			}
		}
		else
		{
			tax = tax * 0.5;
		}
		System.out.println("you tax is :"+tax);




		/*question 5 grade of course*/

		int x;
		int n;
		double y;
		double grade;

		System.out.println("Enter grade of exam");
		x = s.nextInt();
		System.out.println("Enter number of your homework");
		n = s.nextInt();
		System.out.println("Enter the average of homework grade");
		y = s.nextDouble();

		if(n <= 4)
		{
			System.out.println("your final grade is : "+ x);
		}
		else if(n >= 5 && n <= 7)
		{
			if(x >= 60)
			{
				grade = x*0.8+y*0.2;
				System.out.println("your final grade is : "+ grade);
			}
			else
			{
				grade = x*0.9+y*0.1;
				System.out.println("your final grade is : "+ grade);
			}
		}
		else
		{
			if(x >= 60)
			{
				grade = x*0.7+y*0.3;
				System.out.println("your final grade is : "+ grade);
			}
			else
			{
				grade = x*0.6+y*0.4;
				System.out.println("your final grade is : "+ grade);
			}
		}
	}
}