Loan Calculator- When I execute the code, it passess the first two tests only. What am I missing here?

Question

I know you can solve this in many ways and maybe in more efficient ways, but this is the first way I think of.

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int amount = scanner.nextInt();
//your code goes here
int firstmonth=0;
int secondmonth=0;
int thirdmonth=0;
int remainingTotal=0;

for(int months=1; months<=3; months++) {
if(months==1) {

int paymentOne = amount/100 *10;
int remainingAmount = amount - paymentOne;
firstmonth = remainingAmount;
}
if(months==2) {
int paymenTwo=firstmonth/100 *10;
secondmonth = firstmonth-paymenTwo;

}
if(months==3){
int paymenThree = secondmonth/100 *10;
thirdmonth = secondmonth-paymenThree;
}
}
remainingTotal = thirdmonth;
System.out.println(remainingTotal);

}

}

Answer 1

Try your code with input 90.
The result becomes 90.
And that's wrong.

You mistake is in lines like:
paymentOne = amount/100*10

Because of integer calculation becomes amount/100 => zero for small amounts. And multiplied by 10 it's also zero.

Change this lines to:
paymentOne = amount*10/100

Answer 2

Try in all
Amount*10/100

instead of Amount/100*10

Answer 3

Its working, thank you all! 😊

Answer 4

you are making it very long and complicated, I have it done in 1 for + 1 line

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besides, if I remember correctly, it is better to use "*0.1" than "/100*10"
There's something there with the decimals, for some reason you lose precision. Again, I don't remember if it was the case for java.😅😅
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Edit: it wasn't the case for java, see the other answers.