/* TriangleDriver.java
 * Contains the main part of the program about triangles.
 * We create a triangle object based on the lengths of the sides,
 *   then we classify the triangle.
 */
public class TriangleDriver
{
  public static void main(String [] args)
  {
    // We could ask the user to enter 3 values for the lengths
    // of the sides, but we already know how to do this.
    // To simplify this example, I'll just hard-code some values.
    // Create a triangle given the lengths of 3 sides:

    Triangle t = new Triangle(65, 72, 97);

    // Now let's ask this triangle some questions.

    System.out.printf("Looking at triangle:  %s\n",
                      t.toString());

    // First, quit the program if the lengths don't make sense.
    // The "return" statement gets us out of the current function.
    if (! t.isValid())
    {
      System.out.printf("invalid values for triangle\n");
      System.out.printf("make sure values are in ascending order\n");
      return;
    }

    // Compare lengths of the sides.
    if (t.isEquilateral())
      System.out.printf("equilateral\n");
    else if (t.isIsosceles())
      System.out.printf("isosceles\n");
    else
      System.out.printf("scalene\n");

    // Finally, say something about the angles.
    if (t.isRight())
      System.out.printf("right\n");
    else if (t.isObtuse())
      System.out.printf("obtuse\n");
    else
      System.out.printf("acute\n");

    System.out.printf("The perimeter is %d.\n", t.findPerimeter());
  }
}