import java.util.Scanner;

public class UnitConverter
{
  static double value;
  static String unitFrom;
  static String unitTo;

  public static void main (String[] args)
  {
    input();
    converter();
  }
   public static void input()
   {
	   Scanner in = new Scanner(System.in);
	    System.out.println("Convert from?");
	    unitFrom = in.nextLine();
	    System.out.println("Convert to?");
	    unitTo = in.nextLine();
	    System.out.println("Value?");
	    value = in.nextDouble();
   }

   public static void converter()
  {
	  if (unitFrom.equals("in") && unitTo.equals("ft"))
	  {
		  fromIn(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("in") && unitTo.equals("mi"))
	  {
		  fromIn(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("in") && unitTo.equals("mm"))
	  {
		  fromIn(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("in") && unitTo.equals("cm"))
	  {
		  fromIn(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("in") && unitTo.equals("m"))
	  {
		  fromIn(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("in") && unitTo.equals("km"))
	  {
		  fromIn(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("in"))
	  {
		  fromFt(value);
		  toIn(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("ft"))
	  {
		  fromFt(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("mi"))
	  {
		  fromFt(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("mm"))
	  {
		  fromFt(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("cm"))
	  {
		  fromFt(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("m"))
	  {
		  fromFt(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("ft") && unitTo.equals("km"))
	  {
		  fromFt(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("in"))
	  {
		  fromMi(value);
		  toIn(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("ft"))
	  {
		  fromMi(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("mi"))
	  {
		  fromMi(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("mm"))
	  {
		  fromMi(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("cm"))
	  {
		  fromMi(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("m"))
	  {
		  fromMi(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mi") && unitTo.equals("km"))
	  {
		  fromMi(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("in"))
	  {
		  fromMm(value);
		  toIn(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("ft"))
	  {
		  fromMm(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("mi"))
	  {
		  fromMm(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("mm"))
	  {
		  fromMm(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("cm"))
	  {
		  fromMm(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("m"))
	  {
		  fromMm(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("mm") && unitTo.equals("km"))
	  {
		  fromMm(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("in"))
	  {
		  fromCm(value);
		  toIn(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("ft"))
	  {
		  fromCm(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("mi"))
	  {
		  fromCm(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("mm"))
	  {
		  fromCm(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("cm"))
	  {
		  fromCm(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("m"))
	  {
		  fromCm(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("cm") && unitTo.equals("km"))
	  {
		  fromCm(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("in"))
	  {
		  fromM(value);
		  toIn(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("ft"))
	  {
		  fromM(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("mi"))
	  {
		  fromM(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("mm"))
	  {
		  fromM(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("cm"))
	  {
		  fromM(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("m"))
	  {
		  fromM(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("m") && unitTo.equals("km"))
	  {
		  fromM(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("in"))
	  {
		  fromKm(value);
		  toIn(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("ft"))
	  {
		  fromKm(value);
		  toFt(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("mi"))
	  {
		  fromKm(value);
		  toMi(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("mm"))
	  {
		  fromKm(value);
		  toMm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("cm"))
	  {
		  fromKm(value);
		  toCm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("m"))
	  {
		  fromKm(value);
		  toM(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }

	  if (unitFrom.equals("km") && unitTo.equals("km"))
	  {
		  fromKm(value);
		  toKm(value);

		  System.out.println("This is the converted value: ");
		  System.out.println(value);
	  }
  }

  public static void fromIn(double amount)
  {
	  value = amount*2.54/100;
  }

  public static void fromFt(double amount)
  {
	  value = amount*12*2.54/100;
  }

  public static void fromMi(double amount)
  {
	  value = amount*5280*12*2.54/100;
  }

  public static void fromMm(double amount)
  {
	  value = amount/1000;
  }

  public static void fromCm(double amount)
  {
	  value = amount/100;
  }

  public static void fromM(double amount)
  {
	  value = amount;
  }

  public static void fromKm(double amount)
  {
	  value = amount*1000;
  }
  //Convert from Meters
  public static void toIn(double amount)
  {
	  value = amount*100/2.54;
  }

  public static void toFt(double amount)
  {
	  value = amount*100/2.54/12;
  }

  public static void toMi(double amount)
  {
	  value = amount*100/2.54/12/5280;
  }

  public static void toMm(double amount)
  {
	  value = amount*1000;
  }

  public static void toCm(double amount)
  {
	  value = amount*100;
  }

  public static void toM(double amount)
  {
	  value = amount;
  }

  public static void toKm(double amount)
  {
	  value = amount/1000;
  }
}