How to write a program using switch and if else statement that accepts input from the user and used to compute the users age?

Question

This is my code:

import java.util.Scanner;

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

// Accept input from the user and that input can beused to compute the users age.

// if the age is less than 10 months old, you're an infant.

// 10 months - 2 years old = you're a baby

// 3 - 15 years old = you're a kid

// 16 - 18 years old = you're a teenager

// 19 - 99 years old = you're an adult

// 100 - 100+ years old = you're dead

Scanner sc = new Scanner(System.in);

int UserYear;
int UserMonth;
int a;

System.out.println("Please input your year of birth: ")

System.out.print("Year: ")
UserYear = sc.nextInt();

a = (2018 - UserYear);
System.out.println("Your age is" + a);

switch(a)
{

case 1: System.out.println("you're a baby")
break;

case 2: System.out.println("you're a kid")
break;

case 3: System.out.println("you're a teenager")
break;

case 4: System.out.println("you're an adult")
break;

case 5: System.out.println("you're dead")
break;

Answer 1

If you are trying to find a range then you can't use a switch so I would just use if and else if statements. Here is some example code:

System.out.println("How old are you?");
Scanner sc = new Scanner(System.in);
double userAge = sc.nextDouble();

if ((userAge*12) < 10) { //finds months and if age is less than 10 months, print infant
System.out.println("You're an infant!");
}
else if (((userAge*12) >= 10) && (userAge <= 2)) { //if in range of 10 months and 2 years
System.out.println("You're a baby!");
}
else if ((3 <= userAge) && (15 >= userAge)) {
System.out.println("You're a kid!");
}
else if ((16 <= userAge) && (18 >= userAge)) {
System.out.println("You're a teenager!");
}
else if ((19 <= userAge) && (99 >= userAge)) {
System.out.println("You're an adult!");
}
else if (userAge >= 100) {
System.out.println("You're dead!");
}