import java.util.*;
public class Calculator{
public static void main(String[]arg){
Scanner YZ = new Scanner(System.in);
System.out.println("Please enter your age: ");
int userAge = YZ.nextInt();
System.out.println("Please enter your mother's age: ");
int userMomAge = YZ.nextInt();
if(userAge < 0 || userMomAge < 18)
System.out.println("Invalid age");
if(userAge > userMomAge)
System.out.println("thats not possible, please try again!!! ");
else{
System.out.println("Please choose your option, 1 for addition, 2 for substraction, 3 for multiplication, 4 for divison:  ");
int option = YZ.nextInt();

switch(option){
case 1:
int ageAdd = userAge + userMomAge;
System.out.println("The result of the addition is " + ageAdd);
break;
case 2:
int ageSubs = userAge - userMomAge;
System.out.println("The result of the substraction is " + ageSubs);
break;
case 3:
int ageMult = userAge * userMomAge;
System.out.println("The result of the multiplication is " + ageMult);
break;
case 4:
int ageDiv = userAge / userMomAge;
System.out.println("The result of the division is " + ageDiv);
break;
default:
System.out.println("Invalid option type, please try again!!!!");
}
}
}
}