How do I fix multiple negative (-) symbol outputs?-CodePudding

I'm creating a program to answer a prompt:

Sites like Zillow get input about house prices from a database and provide nice summaries for readers. Write a program with two inputs, current price and last month's price (both integers). Then, output a summary listing the price, the change since last month, and the estimated monthly mortgage computed as (currentPrice * 0.051) / 12. End the last output with a newline.

It wants me to have an output of:

"This house is $200000. The change is $-10000 since last month. The estimated monthly mortgage is $850.0."** using the inputs : 200000, 210000

This house is $350000. The change is $40000 since last month. The estimated monthly mortgage is $1487.5.** using the inputs : 350000, 310000

and:

This house is $1000000. The change is $900000 since last month. The estimated monthly mortgage is $4250.0.** using the inputs : 1000000, 100000

I've managed to make a program that can give me results but for some reason it messes up with the - symbol in front of my number for "The change is $_______". For the first output it gives me $10000, the second gives me $-40000, and the third input gives me $-900000. Could someone help me or explain what I can do or why it gives me these results?

Below is my code:

import java.util.Scanner;

public class LabProgram {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);  
        int currentPrice = input.nextInt();
        int lastMonthsPrice = input.nextInt();
        int LMP = lastMonthsPrice - currentPrice;
        double EMP = (currentPrice * 0.051) / 12;
          
        System.out.print("This house is $"   currentPrice   ". ");
        System.out.println("The change is $"   LMP   " since last month.");
        System.out.println("The estimated monthly mortgage is $"   EMP   ".");
    }
}

I've tried putting a negative symbol(-) infront after the dollar sign in "The change is $" but it just adds two negatives for output 2 and 3 after it finishes running

Example of the line of code:

System.out.println("The change is $-"   LMP   " since last month.");

Then I get results like these:

This house is $200000. The change is $-10000 since last month.
The estimated monthly mortgage is $850.0.
This house is $350000. The change is $--40000 since last month.
The estimated monthly mortgage is $1487.5.
This house is $1000000. The change is $--900000 since last month.
The estimated monthly mortgage is $4250.0.

CodePudding user response：

Swap lastMonthsPrice with currentPrice. Your subtracting formula is wrong.

CodePudding user response：

You're subtracting the wrong way. The change in price is the current price minus the previous price.

int LMP = currentPrice - lastMonthsPrice;