Program 92, Heron's Formula

Code

   ///Name: Stella Koliavas
   ///Period: 5
   ///File Name: HeronForm.java
   ///Date Finshed: 3/11/16
   
   public class HeronsForm
   {
	 public static void main( String[] args )
	 {
		double a;
		
		a = triangleArea(3, 3, 3);
		System.out.println("A triangle with sides 3,3,3 has an area of " + a );

		a = triangleArea(3, 4, 5);
		System.out.println("A triangle with sides 3,4,5 has an area of " + a );
 
		a = triangleArea(7, 8, 9);
		System.out.println("A triangle with sides 7,8,9 has an area of " + a );

		System.out.println("A triangle with sides 5,12,13 has an area of " + triangleArea(5, 12, 13) );
		System.out.println("A triangle with sides 10,9,11 has an area of " + triangleArea(10, 9, 11) );
		System.out.println("A triangle with sides 8,15,17 has an area of " + triangleArea(8, 15, 17) );
        
        a = triangleArea(9, 9, 9);
		System.out.println("A triangle with sides 9,9,9 has an area of " + a );
	 }
 
	 public static double triangleArea( int a, int b, int c )
	 {
		// the code in this method computes the area of a triangle whose sides have lengths a, b, and c
		double s, A;

		s = (a+b+c) / 2.0;
		A = Math.sqrt( s*(s-a)*(s-b)*(s-c) );

		return A;
		// ^ after computing the area, "return" it
	  }
   }
  //answers are the same
  //30 lines vs 51
  //easier to fix in methods
  //pretty much the same difficulty to add as other method

        
        
        


        
    

Picture of the output