FirstExercise

#include <iostream>
using namespace std;

int main()
{
	unsigned int number;
	cin >> number;
	char RomanNum;

	if (number > 3000)
	{
		cout << "Invalid number!";
		return 1;
	}

	if (number >= 1000)
	{

		switch (number / 1000)
		{
		case 3:
			cout << "M";
		case 2:
			cout << "M";
		case 1:
			cout << "M";
		}
	}
	number %= 1000;

	if (number >= 100)
	{
		switch (number / 100)
		{
		case 9:
			cout << "CM";
			break;
		case 8:
			cout << "DCCC";
			break;
		case 7:
			cout << "DCC";
			break;
		case 6:
			cout << "DC";
			break;
		case 5:
			cout << "D";
			break;
		case 4:
			cout << "CD";
			break;
		case 3:
			cout << "C";
		case 2:
			cout << "C";
		case 1:
			cout << "C";
		}
	}
	number %= 100;
	if (number >= 10)
	{
		switch (number / 10)
		{
		case 9:
			cout << "XC";
			break;
		case 8:
			cout << "LXXX";
			break;
		case 7:
			cout << "LXX";
			break;
		case 6:
			cout << "LX";
			break;
		case 5:
			cout << "L";
			break;
		case 4:
			cout << "XL";
			break;
		case 3:
			cout << "X";
		case 2:
			cout << "X";
		case 1:
			cout << "X";
		}
	}

	switch (number % 10)
	{
	case 9:
		cout << "IX";
		break;
	case 8:
		cout << "VIII";
		break;
	case 7:
		cout << "VII";
		break;
	case 6:
		cout << "VI";
		break;
	case 5:
		cout << "V";
		break;
	case 4:
		cout << "IV";
		break;
	case 3:
		cout << "I";
	case 2:
		cout << "I";
	case 1:
		cout << "I";
	}


	return 0;
}