Along with this lab statement is a 'solution' to the Roman numeral calculator. Create a project and import this code file into that project. Identify and fix all logic errors to make the code function properly. You may use a debugger and / or add print statements. You are not allowed to modify the structure of the code, although you may add a single line. Otherwise, you may modify expressions in the code.
import java.util.Scanner;
public class RomanNumeralCalculator
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
int num;
do
{
System.out.println("Please enter an integer from 1 to 5999. Enter a
negative number to exit.");
System.out.print("-> ");
num = input.nextInt();
if (num <= 0) System.exit(0);
if (num < 6000)
{
String roman = "";
while (num >= 1000)
{
roman += "M";
num -= 1000;
}
switch (num % 10)
{
case 0:
case 1:
case 2:
case 3:
break;
case 4:
roman += "CD";
num -= 400;
break;
case 5:
case 6:
case 7:
case 8:
roman += "D";
num -= 500;
break;
case 9:
roman += "CM";
num -= 900;
break;
default:
System.err.println("There is a problem with the tens
place.");
}
while (num >= 100)
{
roman += "C";
num -= 100;
}
switch (num / 10 % 10)
{
case 0:
case 1:
case 2:
case 3:
break;
case 4:
roman += "XL";
num -= 40;
break;
case 5:
case 6:
case 7:
case 8:
roman += "L";
num -= 50;
break;
case 9:
roman += "CX";
num -= 90;
break;
default:
System.err.println("There is a problem with the tens
place.");
}
while (num >= 10)
{
roman += "X";
num -= 10;
}
switch (num)
{
case 0:
case 1:
case 2:
case 3:
break;
case 4:
roman += "IV";
num -= 4;
break;
case 5:
case 6:
case 7:
case 8:
roman += "v";
num -= 5;
break;
case 9:
roman += "IX";
num -= 9;
break;
default: System.err.println("There is a problem with the units
place.");
}
while (num > 0)
{
roman += "I";
num--;
}
System.out.println(roman);
}
}
while (num > 5999);
}
}
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