raw code: Compound Interest calculation in Java [ simple, user friendly]

Q: lets say, you to find out what will be the number of viewers in my blog in next 30 days. given that, for instance i have 10,000 views now, increasing rate is 1% each day. you have to calculate it for next 30 days and show the result in every other 10th day.

formula is: amount= pri(1+rate)^time

=>

import java.util.Scanner;

class grps{
    public static void main(String[] agrs){
        Scanner input= new Scanner(System.in);
        int y=0;
       
        System.out.print("enter the sum you have already: ");
        double principal=input.nextDouble(); //=10000
       
        System.out.print("how much is the growth rate: ");
        double rate=input.nextDouble();    //=.01
       
        System.out.print("for how many days you want to calculate: ");
        double day=input.nextDouble();    //=30
       
        System.out.print("how often you want to see the result [e.g: 1 being every day, 2 being every other day]: ");
        double show=input.nextDouble();    //=10
       
        for(int x=1; x<=day; x+=show){
            y+=(int)(principal*Math.pow(1+rate, day));
            System.out.println("In "+x+" days there will be "+y+" followers!");
        }
    }
}