W04Practical.java

public class W04Practical{
	public static void main (String [] args){
	String output = "";
	System.out.println("Please chose an option: \n1. Metric to Imperial \n2. Imperial to Metric");
	int	Selection = EasyIn.getInt();//Allow user to choose what they want to convert																																
	if (Selection==1){//If the user chooses to convert from Metric to Imperial this code section is run
	System.out.println("Please eneter the number of meters you want to convert:");
	float Meters = EasyIn.getFloat();//User can input the number of meters they wish to convert (this can be a decimal number)
	if (Meters <= 0) System.out.println("Invalid Input");//If the user eters something invalid and error message is displayed 
	else output=MetricToImperial(Meters);
	System.out.println(output);}//Once the conversion is complete the string is printed
	if (Selection==2){ output=ImperialToMetric();
	System.out.println(output);}//Once the conversion is complete the string is printed
	else if (Selection!=1 && Selection!=2)System.out.println("Invalid choice.");	//If the user makes an invalid choice at the start
	}
	
public static String MetricToImperial(float Meters){
	String Y="";
	String F="";
	String I=""; 
	String OutString="";
	float Inches = Meters*39.3700787f;//First of all the numbers of inches are calculated 
	int Yards = (int) Inches/36;//The number of yards is then calculated by dividing the number of inches by 36
	//The output string is then updated accordingly 
	if (Yards>1) Y="yards";
	else if (Yards==1)  Y="yard";
	Inches = Inches-(Yards*36);//The number of inches is then updated 
	int Feet = (int) Inches/12;//The number of feet is then calculated by dividing the number of inches by 12
	//Again the output string is then updated accordingly 
	if (Feet>1) F="feet";
	else if (Feet==1) F="foot";
	Inches = Inches-(Feet*12);//Finally the number of inches is then updates again 
	if (Inches>1.0){ 
		Inches = (float)(Math.round(Inches*100.0)/100.0);//The number of inches variable is rounded to 2.d.p
		//Once more the output string is then updated accordingly 
		I="inches";}
	else if (Inches==1.0) I="inch";
	OutString=OutputFormat(Y, F, I, Yards, Feet, Inches);
	return OutString;
	}


public static String OutputFormat(String Y, String F, String I, int Yards, int Feet, float Inches){
	String OutString ="The conversion = ";//Defining the string which is used to hold the output
	if (Yards != 0 && Feet != 0 && Inches !=0)			OutString=OutString+Yards+" "+Y+", "+Feet+" "+F+" and "+Inches+" "+I;
	else if (Yards != 0 && Feet != 0 && Inches ==0f)	OutString=OutString+Yards+" "+Y+" and "+Feet+" "+F;
	else if (Yards != 0 && Feet == 0 && Inches !=0f)	OutString=OutString+Yards+" "+Y+" and "+Inches+" "+I;
	else if (Yards == 0 && Feet != 0 && Inches !=0f)  	OutString=OutString+Feet+" "+F+" and "+Inches+" "+I;
	else if (Yards != 0 && Feet == 0 && Inches ==0f)	OutString=OutString+Yards+" "+Y;
	else if (Yards == 0 && Feet != 0 && Inches ==0f)	OutString=OutString+Feet+" "+F;
	else if (Yards == 0 && Feet == 0 && Inches !=0f) 	OutString=OutString+Inches+" "+I;
	else if (Yards == 0 && Feet == 0 && Inches ==0f) 	OutString="No distance at all...";
	return OutString;
	
}