public static String Conversion(int number)
{
Expression[] expressions = new Expression[]
{
new RomanThousandExpression(),
new RomanHundredExpression(),
new RomanTenExpression(),
new RomanOneExpression()
};
if (IsValidNumber(number))
{
var context = new RomanContext(number);
foreach (var expression in expressions)
{
expression.Interpret(context);
}
return("Decimal equivalent of " + number + " is " + context.Output);
}
else
{
return("The Number provided is not in a required range.");
}
}
public override void Interpret(RomanContext value)
{
while ((value.Input - 1000) >= 0)
{
value.Output += "M";
value.Input -= 1000;
}
}
public override void Interpret(RomanContext value)
{
while ((value.Input - 9) >= 0)
{
value.Output += "IX";
value.Input -= 9;
}
while ((value.Input - 5) >= 0)
{
value.Output += "V";
value.Input -= 5;
}
while ((value.Input - 4) >= 0)
{
value.Output += "IV";
value.Input -= 4;
}
while ((value.Input - 3) >= 0)
{
value.Output += "III";
value.Input -= 3;
}
while ((value.Input - 2) >= 0)
{
value.Output += "II";
value.Input -= 2;
}
while ((value.Input - 1) >= 0)
{
value.Output += "I";
value.Input -= 1;
}
}
public override void Interpret(RomanContext value)
{
while ((value.Input - 900) >= 0)
{
value.Output += "CM";
value.Input -= 900;
}
while ((value.Input - 500) >= 0)
{
value.Output += "D";
value.Input -= 500;
}
while ((value.Input - 400) >= 0)
{
value.Output += "CD";
value.Input -= 400;
}
while ((value.Input - 300) >= 0)
{
value.Output += "CCC";
value.Input -= 300;
}
while ((value.Input - 200) >= 0)
{
value.Output += "CC";
value.Input -= 200;
}
while ((value.Input - 100) >= 0)
{
value.Output += "C";
value.Input -= 100;
}
}
public override void Interpret(RomanContext value)
{
while ((value.Input - 90) >= 0)
{
value.Output += "XC";
value.Input -= 90;
}
while ((value.Input - 50) >= 0)
{
value.Output += "L";
value.Input -= 50;
}
while ((value.Input - 40) >= 0)
{
value.Output += "XL";
value.Input -= 40;
}
while ((value.Input - 30) >= 0)
{
value.Output += "XXX";
value.Input -= 30;
}
while ((value.Input - 20) >= 0)
{
value.Output += "XX";
value.Input -= 20;
}
while ((value.Input - 10) >= 0)
{
value.Output += "X";
value.Input -= 10;
}
}
public abstract void Interpret(RomanContext value);
