roman_number.h

#ifndef CPP_ALGORITHM_ROMAN_NUMBER_H
#define CPP_ALGORITHM_ROMAN_NUMBER_H

#include <string>

namespace RomanNumber
{
    /**
     * \brief Verify if a string is a valid roman number.
     * \param str roman number string
     * \return whether the string is a valid roman number
     */
    auto VerifyRomanString(const std::string& str) -> bool;

    /**
     * \brief Convert a roman number to integer.
     * \param str roman number string
     * \return result number
     */
    auto RomanStringToInteger(const std::string& str) -> int;

    // TODO: Implement IntegerToShortestRomanString
    auto IntegerToShortestRomanString(int number) -> std::string;
}

#endif