// Example put together during lecture class.  Feel free to add to this, 
//  or try out changes, other methods, etc.

class Length
{
   private int feet;		// 0 or more
   private double inches;	// 0 <= inches < 12.0

   // default constructor:  init to 0' 0"
   public Length()		
   {
      this(0,0);
   }

   public Length(int f, double i)
   {
      if (set(f,i) == false)		// if set attempt doesn't work
	set(0,0);
   }

   public boolean set(int f, double i)
   {
      if (f >= 0 && i >= 0 && i < 12)
      {
         feet = f;
         inches = i;
         return true;
      }
      else
         return false;
   }

   public int getFeet()
   {
      return feet;
   }

   public double getInches()
   {
      return inches;
   }

   public String toString()
   {
      return (feet + "\' " + inches + "\"");
   }

   public Length add(Length rSide)
   {
       int f    = feet + rSide.feet;	// add together the two feet
       double i = inches + rSide.inches;
       if (i >= 12)
       {
          f++;		// add one foot
          i -= 12;	// subtract 12 from inches
       }
       return new Length(f,i);
   }


   public static void main(String[] args)
   {
       Length L1 = new Length();	// use default constructor
       Length L2 = new Length(3, 6.5);	// 3' 6.5"

       System.out.println("L1 = " + L1);
       System.out.println("L2 = " + L2);

       L1.set(5,10.4);
       L2.set(-4,11);

       System.out.println("L1 = " + L1);
       System.out.println("L2 = " + L2);

       Length result;
       result = L1.add(L2);	// desired call

       System.out.println("L1.add(L2) returns " + result);
   }
}