# write a program in c++ to convert numbers 1-99 into roman numerals?

program in c++ that the user enters a number from 1-99 and it out puts the roman numeral

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• Siju
Lv 4
7 years ago

// Converts an integer value into Roman numerals

public string NumberToRoman(int number)

{

}

// Validate

if (number < 0 || number > 3999)

throw new ArgumentException("Value must be in the range 0 - 3,999.");

if (number == 0) return "N";

// Set up key numerals and numeral pairs

int[ ] values = new int[] { 1000, 900, 500, 400, 100,90, 50, 40, 10, 9, 5, 4, 1 };

string[ ] numerals = new string[ ]

{ "M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I" };

// Initialise the string builder

StringBuilder result = new StringBuilder();

// Loop through each of the values to diminish the number

for (int i = 0; i < 13; i++)

{

// If the number being converted is less than the test value, append

// the corresponding numeral or numeral pair to the resultant string

while (number >= values[i])

{

number -= values[i];

result.Append(numerals[i]);

}

}

// Done

return result.ToString();

• Bob
Lv 4
7 years ago

include <iostream>

using namespace std;

int main()

{

int number;

string numberInRomanNumeral;

do

{

cout << "Enter a number between 1 and 99 (inclusive): ";

cin >> number;

} while(number < 1 || number > 99);

if(number >= 10 && number < 20)

numberInRomanNumeral = "X";

else if(number >= 20 && number < 30)

numberInRomanNumeral = "XX";

else if(number >= 30 && number < 40)

numberInRomanNumeral = "XXX";

else if(number >= 40 && number < 50)

numberInRomanNumeral = "XL";

else if(number >= 50 && number < 60)

numberInRomanNumeral = "L";

else if(number >= 60 && number < 70)

numberInRomanNumeral = "LX";

else if(number >= 70 && number < 80)

numberInRomanNumeral = "LXX";

else if(number >= 80 && number < 90)

numberInRomanNumeral = "LXXX";

else if(number >= 90 && number < 100)

numberInRomanNumeral = "XC";

if(number > 10)

number = number % 10;

if(number == 1)

numberInRomanNumeral += "I";

else if(number == 2)

numberInRomanNumeral += "II";

else if(number == 3)

numberInRomanNumeral += "III";

else if(number == 4)

numberInRomanNumeral += "IV";

else if(number == 5)

numberInRomanNumeral += "V";

else if(number == 6)

numberInRomanNumeral += "VI";

else if(number == 7)

numberInRomanNumeral += "VII";

else if(number == 8)

numberInRomanNumeral += "VIII";

else if(number == 9)

numberInRomanNumeral += "IX";

cout << numberInRomanNumeral << endl;

system("pause");

return 0;

}