Java lesson 1 homework exr. 2-5

import java.util.Scanner;
public class Program
{
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);

        //targil 2

        final int charToInt ='0';//שומר הקבוע את המספר של אות '0'
        System.out.println("Please enter three numbers from 0 to 9 divided by space");
        int ch1=sc.next().charAt(0);// ch1 מקבל מספר של אות שקראנו בעזרת scanner
        int ch2=sc.next().charAt(0);
        int ch3=sc.next().charAt(0);
        System.out.println((ch1-charToInt)*100 + (ch2-charToInt)*10 + (ch3-charToInt));


        //targil 3
        int abLength ='Z'-'A'+1;//in this case better to do like this
        System.out.println("English Alpabet length is: "+ abLength );


        //targil 4
        final double startCost = 10.2;
        final double perKM=1.3;
        final double perBag=2.0;
        System.out.println("Please enter length of trip and amount of bags divided by Space");
        int tripLength = sc.nextInt();
        int bags=sc.nextInt();
        System.out.println("Total price: "+(startCost + tripLength*perKM + bags*perBag));


        //targil5
        final int station = 5;
        final int between = 3;
        System.out.println("Enter your start position, lift start position, and the floor you need to arrive divided by Space");
        int myStartPosition=sc.nextInt();
        int liftStartPosition=sc.nextInt();
        int goal=sc.nextInt();
        System.out.println("Tatal time in seconds: "+((liftStartPosition-myStartPosition)*between+station+(goal-myStartPosition)*between));

    }
}