{}
//The Triangle Base Java Program
//Teacher who is learning Java: Andy Goldstein
//First, create a Scanner object. This will allow keyboard input from the user.
import java.util.Scanner;
//Second, write Java statements to prompt the user for the area and height of the triangle.
//I need to first create the class declaration
public class TriangleBaseCalculator {
//Next I need to create the main method
public static void main(String[] args) {
//Now I need to create a Scanner object to read input from the keyboard
Scanner input = new Scanner(System.in);
//Now I need to create variables to store the area, height and base of the triangle
double area;
double height;
double base;
//I want to print a message welcoming the user to the Triangle Base Calculator
System.out.println("---Welcome to the Triangle Base Calculator---");
System.out.println("You have arrived just in time!");
System.out.println(""); //Skipping a line to create some space
//Now I want to ask the user for input for the area of the triangle
System.out.println("Enter the area of the triangle you want to calculate: ");
//Now I want to assign the user's answer to the area variable I created
area = input.nextDouble();
//Now I want to ask the user for input for the height of the triangle
System.out.println("Enter the height of the triangle you want to calculate: ");
//Now I want to assign the user's answer to the height variable I created
height = input.nextDouble();
//Good so far.
//Next, I want to calculate the base of the triangle, based on the input entered by the user. The formula to calculate the area of a triangle is 1/2(base*height). So the base would be b = 2a/h. Let's do this!
//I need to make sure the height is not equal to 0, since you cannot divide by zero. I'm going to work this into a conditional statement
if (height > 0) {
//I want to calculate and show the base of the triangle
base = (2 * area) / height;
System.out.println("The base of the triangle is: " + base);
} else {
//I want to tell the user that they can't have 0 or a negative for the height.
System.out.println("Warning Will Robinson! Danger! Danger! The height cannot be 0 or less than 0!!!!");
}
//Now I want to close the Scanner object so that I don't take up system resources
input.close();
}
}