Sleep

package sleep;
import java.util.Scanner;

public class Sleep {

    public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    int year,month,day,tyear,tmonth,tday,yyear,ymonth,yday,alive,sleep=0;
    System.out.println("Please enter your birthday,use the numerical for the month too.");
    System.out.print("Birth year:");
    year = input.nextInt();
    System.out.print("Birth month:");
    month = input.nextInt();
    System.out.print("Birth date:");
    day =  input.nextInt();
    System.out.print("Today's year:");
    tyear = input.nextInt();
    System.out.print("Today's month:");
    tmonth = input.nextInt();
    System.out.print("Today's date:");
    tday = input.nextInt();

    yyear = 365*(tyear-year);
    ymonth = 30*(tmonth-month);
    yday = (tday-tmonth);
    alive = (yyear+ymonth+yday);

    sleep = (alive*8);



    System.out.print("You have been alive for "+alive);
    System.out.println(" days.");
    System.out.print("You have slept for "+sleep);
    System.out.print(" hours.");

    }

}