C++ PROGRAM: that converts a number entered in roman numerals to decimal. Your program should consist of a class, say, RomanType and must have following methods:

Write a program that converts a number entered in roman numerals to decimal. Your program should

consist of a class, say, RomanType and must have following methods:

a.     Store the number as a Roman numeral.

b.     Convert and store the number into decimal form.

c.      Print the number as a Roman numeral or decimal number as requested by the user.

d.     The decimal values of the roman numbers are: M=100, D=500, C=100,  L=50, X=10, V=5,    I=1

e.     Test your program using the following Roman numbers: MCXIV, CCCLIX,  MIXLXVI.

SOLUTION:

#include<iostream.h>

#include<conio.h>

#include<string.h>

class romanType

{

private:

    char romanNum[6];

    int sum;

public:

    void printRoman(char romanNum[6]);

    int convertRoman(char romanNum[6]);

    int printDecimal(int sum);

};

void romanType::printRoman(char romanNum[6])

{

    cout << "Here is your number in Roman Numeral form: " << romanNum << endl;

}

   int romanType::convertRoman(char romanNum[6])

{

    int total=0, sum;

    int len = 0;

    len = strlen(romanNum);

    int count;

     for(int i = 0; i < len; i++)

     {

      switch(romanNum[i])

  {

case 'M':

     count = 1000;

     break;

case 'm':

     count = 1000;

     break;

case 'D':

     count = 500;

     break;

case 'd':

     count = 500;

     break;

case 'C':

     count = 100;

     break;

case 'c':

     count = 100;

     break;

case 'L':

     count = 50;

     break;

case 'l':

     count = 50;

     break;

case 'X':

     count = 10;

     break;

case 'x':

     count = 10;

     break;

case 'V':

     count = 5;

     break;

case 'v':

     count = 5;

     break;

case 'I':

     count = 1;

     break;

case 'i':

     count = 1;

     break;

  }

  total = total + count;

  sum = total;

}

  cout<<sum;

  return sum;

}

/*int romanType::printDecimal(int sum)

{

    cout << "Here is your number in Decimal form: " << sum << endl;

    return sum;

}*/

int main()

{

    romanType r;

    char romanNum[6];

    char choice;

    int sum;

    clrscr();

    cout << " Please enter your Roman Numeral: " << endl;

    cin >> romanNum;

    cout << endl;

    cout << "Do you want the Roman Numeral or the Decimal?" << endl;

    cout << "Press [D] for Decimal!" << endl << "Press [R] for Roman Numeral!" << endl;

    cin >> choice;

    if (choice == 'D' || choice == 'd')

         r.convertRoman(romanNum);

    else if (choice == 'R' || choice == 'r')

r.printRoman(romanNum);

    else

cout << "That wasn't the right button!" << endl;

    getch();

    return 0;

}

OUTPUT: