Day 2 : Operators - HackerRank 30 days of code solution

Objective
In this challenge, you'll work with arithmetic operators.

Task
Given the meal price (base cost of a meal), tip percent (the percentage of the meal price being added as tip), and tax percent(the percentage of the meal price being added as tax) for a meal, find and print the meal's total cost.

Note: Be sure to use precise values for your calculations, or you may end up with an incorrectly rounded result!

Input Format

There are  lines of numeric input:
The first line has a double,  (the cost of the meal before tax and tip).
The second line has an integer,  (the percentage of  being added as tip).
The third line has an integer,  (the percentage of  being added as tax).

Output Format

Print the total meal cost, where  is the rounded integer result of the entire bill ( with added tax and tip).

Sample Input

12.00
20
8

Sample Output

15

Explanation

Given:
, , 

Calculations:

We round  to the nearest dollar (integer) and then print our result, .

Solution:

import java.util.*;

import java.math.*;

public class Arithmetic {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        double mealCost = scan.nextDouble(); // meal price

        int tipPercent = scan.nextInt(); // tip percentage

        int taxPercent = scan.nextInt(); // tax percentage

        scan.close();

        // Write your calculation code here.

        double tip=mealCost*tipPercent/100;

        double tax=mealCost*taxPercent/100;

        // cast the result of the rounding operation to an int and save it as totalCost

        int totalCost = (int) Math.round(/*numberToRoundHere*/mealCost+tip+tax);

        // Print your result

        System.out.println("The total meal cost is "+totalCost+" dollars.");

    }

}