Assignemnt # 92

Code

      ///Name: Dakota Donahue
      ///Period: 5
      ///Project Name:
      ///File Name:
      ///Date: 4/29/2016
      
      public class HeronsFormula
      {
      	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) );
              System.out.println("A triangle with sides 9,9,9 has an area of " + triangleArea(9, 9, 9) );
      	}
       
      	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
      	}
      }
      
      //HeronsFormula.java and HeronsFormulaNoMethod.java produce the same output.
      //HeronsForumla.java is 30 lines long, whereas HerosFormulaNoMethod.java is 50 lines long.
      //It was easier to change to 2 to 2.0 in the file which utilizes methods
      //It was easier to find the area of an equilateral triangle with sides 9 long in the file which utilizes methods