對象數組-std :: array-構造函數初始化問題

Question

我正在編寫一個周期表程序來幫助我理解類。 我希望能夠通過多種屬性來顯示/排序元素，例如它是金屬，非金屬還是准金屬。 我不確定該怎么做，但是我的第一個猜測是創建一個對象數組。 但是，使用構造函數設置值時遇到問題。

類

class Element{
    public:
       enum class groupNames {  HYDROGEN, ALKALI, ALKALINE, GROUP_THREE, GROUP_FOUR, GROUP_FIVE,
                                GROUP_SIX, GROUP_SEVEN, GROUP_EIGHT, GROUP_NINE, GROUP_TEN,
                                GROUP_ELEVEN,GROUP_TWELVE, GROUP_THIRTEEN, GROUP_FOURTEEN,
                                GROUP_FIFTEEN, CHALCOGEN, HALOGEN, NOBLE_GAS
                                };
        enum class orbitals {ORBITAL_NOTSET, S_BLOCK, P_BLOCK, D_BLOCK, F_BLOCK};
        enum class metal_status {METAL = 0, METALLOID, NONMETAL};
        Element();
        Element(int aNumber, int pNumber,groupNames groupnames, metal_status MetalStatus, orbitals Orbital,std::string eName, std::string eSybol);
        void displayProperties();

    private:
        groupNames groupNumber;
        orbitals orbital;
        metal_status metalStatus;
        std::string elementSymbol;
        std::string elementName;
        int atomicNumber;
        int periodNumber;
};

Element::Element()
{
    atomicNumber = 0;
    periodNumber = 0;
    groupNumber = groupNames::HYDROGEN;
    metalStatus = metal_status::METAL;
    orbital = orbitals::ORBITAL_NOTSET;
    elementName = "NULL";
    elementSymbol = "NULL";
}

Element::Element(int aNumber, int pNumber,groupNames groupnames, metal_status MetalStatus, orbitals Orbital,std::string eName, std::string eSymbol)
{
    groupNumber = groupnames;
    metalStatus = MetalStatus;
    orbital = Orbital;
    atomicNumber = aNumber;
    periodNumber = pNumber;
    elementName = eName;
    elementSymbol = eSymbol;
}

void Element::displayProperties()
{
    std::cout << elementName << ", " << elementSymbol << "\n"
              << "Group Number: " << as_integer(groupNumber) << "\n"
              << "Metal Status: " << as_integer(metalStatus) << "\n"
              << "Orbital: "      << as_integer(orbital) << "\n"
              << "Atomic Number: "<< atomicNumber << "\n"
              << "Period Number: "<< periodNumber;
}

以前的初始化方法 //工作正常，問題是我無法按屬性排序

Element Hydrogen(1,1, Element::groupNames::HYDROGEN, Element::metal_status::NONMETAL, Element::orbitals::S_BLOCK, "Hydrogen", "H");
Element Helium(2, 1, Element::groupNames::NOBLE_GAS, Element::metal_status::NONMETAL, Element::orbitals::S_BLOCK, "Helium", "He");

std :: array方法-問題！

std::array<Element, 115> Elements =
{
    Elements[0],
    Elements[1](1,1, Element::groupNames::HYDROGEN, Element::metal_status::NONMETAL, Element::orbitals::S_BLOCK, "Hydrogen", "H")
};

錯誤：錯誤：與“（std :: array :: value_type {aka Element}）的調用不匹配（int，int，Element :: groupNames，Element :: metal_status，Element :: orbitals，const char [9]，const字符[2]）'

Answer 1

您可能需要兩套牙套（我正在拉出頭發，弄清楚什么是lang鐺聲。）我建議統一初始化。 同樣，我為您的枚舉添加了Element資格，並對其進行了更改以使其與您的類定義中的名稱匹配。

std::array<Element, 115> Elements =
{{
    {},
    {1,1, Element::groupNames::HYDROGEN, Element::metal_status::NONMETAL, Element::orbitals::S_ORBITAL, "Hydrogen", "H"}
}};

---

或者，您可以嘗試：

std::array<Element, 115> Elements
{  
  Element(), 
  Element(1,1, Element::groupNames::HYDROGEN, Element::metal_status::NONMETAL, Element::orbitals::S_ORBITAL, "Hydrogen", "H")  
};