Ajeet Pratap Singh
according to me its ok but is calculating wrong values in
0 Answer(s)      5 years and 2 months ago
Posted in : Java Beginners

program to calculate roman numbers .....i.e roman number calculator

import java.util.*; import java.io.*; class romancalci { public static void main(String args[])throws IOException { int decimal1 = 0;int decimal2=0; Scanner input=new Scanner(System.in); System.out.print("Enter a Roman Number 1st: "); String roman1 = input.next(); System.out.println("Enter a Roman Number 2nd: "); String roman2=input.next(); String romanNumeral1 = roman1.toUpperCase(); String romanNumeral2=roman2.toUpperCase(); int x = 0;int result=0;int largest=0;int number=0; int l1=romanNumeral1.length(); int l2=romanNumeral2.length(); String numeral1=romanNumeral1; String numeral2=romanNumeral2;
String s="IC"; String s3="IVC";

``` String newNumeral = numeral1.replace("XL", "XXXX"); // Replaces XL with XXXX

String newNumeral2 = newNumeral.replace("XC", "LXXXX"); // Replaces XC with LXXXX

String newNumeral3 = newNumeral2.replace("CD", "CCCC"); // Replaces CD with CCCC

String newNumeral4 = newNumeral3.replace("CM", "DCCCC"); // Replaces CM with DCCC

String newNumeral5 = newNumeral4.replace("IV", "IIII"); // Replaces IV with IIII

String newNumeral6 = newNumeral5.replace("IX", "VIIII");

l1=newNumeral6.length();

String newNumeralz = numeral2.replace("XL", "XXXX"); // Replaces XL with XXXX

String newNumeralz2 = newNumeralz.replace("XC", "LXXXX"); // Replaces XC with LXXXX

String newNumeralz3 = newNumeralz2.replace("CD", "CCCC"); // Replaces CD with CCCC

String newNumeralz4 = newNumeralz3.replace("CM", "DCCCC"); // Replaces CM with DCCC

String newNumeralz5 = newNumeralz4.replace("IV", "IIII"); // Replaces IV with IIII

String newNumeralz6 = newNumeralz5.replace("IX", "VIIII");
l2=newNumeralz6.length();
```

if(newNumeral6.equals(s)) { System.out.println("enter the correct roman value 1 in place of IC"); newNumeral6="0"; }

do { char convert1 = newNumeral6.charAt(x); switch (convert1) { case 'M': decimal1 += 1000; break;

```                    case 'D':
decimal1 += 500;
break;

case 'C':
decimal1 += 100;
break;

case 'L':
decimal1 += 50;
break;

case 'X':
decimal1 += 10;
break;

case 'V':
decimal1 += 5;
break;

case 'I':
decimal1 += 1;
break;
}
x++;
} while (x < l1);
System.out.println("Decimal Number1 is: " + decimal1);
x=0;
if(newNumeralz6.equals("ic"))
```

{ System.out.println("enter the correct roman value 2 in place of IC"); newNumeralz6="0"; }

do { char convert2 = newNumeralz6.charAt(x); switch (convert2) { case 'M': decimal2 += 1000; break;

```                    case 'D':
decimal2 += 500;
break;

case 'C':
decimal2 += 100;
break;

case 'L':
decimal2 += 50;
break;

case 'X':
decimal2 += 10;
break;

case 'V':
decimal2 += 5;
break;

case 'I':
decimal2 += 1;
break;
}
x++;

} while (x < l2);
System.out.println("Decimal Number2 is: " + decimal2);

System.out.println("enter the choice for calculating \n 1 for addition  \n 2 for subtraction \n 3 for multiplication");
int choice=input.nextInt();
switch(choice)
```

{ case 1: result=decimal1+decimal2; System.out.println("the calculated result in integer is= "+ result); break; case 2: result=decimal1-decimal2; System.out.println("the calculated result in integer is= "+ result); break; case 3: result=decimal1*decimal2; System.out.println("the calculated result in integer is= "+ result); break; default: System.out.println("enter the correct choice"); }

```      number=result;
String roman="";

while(number>=1000){
roman += "M";
number-=1000;
}

while(number>=900){
roman += "CM";
number-=900;
}

while(number>=500){
roman += "D";
number-=500;
}

while(number>=400){
roman += "CD";
number-=400;
}

while(number>=100){
roman += "C";
number-=100;
}

while(number>=90){
roman += "XC";
number-=90;
}

while(number>=50){
roman += "L";
number-=50;
}

while(number>=40){
roman += "XL";
number-=40;
}

while(number>=10){
roman += "X";
number-=10;
}

while(number>=9){
roman += "IX";
number-=9;
}

while(number>=5){
roman += "V";
number-=5;
}

while(number>=4){
roman += "IV";
number-=4;
}

while(number>=1){
roman += "I";
number-=1;
}

System.out.println("the final result in roman ="+ roman);
}
```

}

according to me its ok but is calculating wrong values in
according to me its ok but is calculating wrong values in   program to calculate roman numbers .....i.e roman number calculator import java.util....); System.out.println("enter the choice for calculating \n 1 for addition \n 2
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