Question

我想将我的二维阵列Menza传递给函数..

class Menza
{
    public:
    string PrintLunch() const {return Lunch;};
    unsigned int PrintID() const {return ID;};
    double PrintPrice() const {return Price;};
    double PrinteValue() const {return eValue;};
    string PrintDescription() const {return Description;};
    void ChangeLunch(string Change) {Lunch = Change;};
    void ChangePrice(double Change) {Price = Change;};
    void ChangeID(int Change) {ID = Change;};
    void ChangeeValue(double Change) {eValue = Change;};
    void ChangeDescription(string Change) {Description = Change;};
private:
    string Lunch;
    double Price;
    unsigned int ID;
    string Description;
    double eValue;
};

const int Lunches = 5;

void LoadFile(bool FileChoice,Menza (*InputFromFile)[Lunches]);
void CustomerSelection(Menza CustomerSelect[],Menza (*InputFromFile)[Lunches]);

int main()
{
    Menza InputFromFile[Lunches][Lunches];
    Menza CustomerSelect[Lunches];
    bool FileChoice = false;

    LoadFile(FileChoice,InputFromFile);
    CustomerSelection(CustomerSelect,InputFromFile);
}

编译完成后，它会显示我：

Semestralka.obj : error LNK2019: unresolved external symbol "void __cdecl LoadFile(bool,class Menza (*)[5])" (?LoadFile@@YAX_NPAY04VMenza@@@Z) referenced in function _main
1>E:\My VSB\ZP projekty\Semestralka\Debug\Semestralka.exe : fatal error LNK1120: 1 unresolved externals

有人可以解释一下这个函数调用中的错误吗？

谢谢

Answer 1

您没有LoadFile函数的定义，只有声明。因此编译器无法理解此函数应该做什么。您必须定义它或链接定义它的库（并包含此库中的标头）。（同样适用于CustomerSelection）。

在此处阅读有关定义和声明之间差异的更多信息：declare_vs_define

将2D数组传递给函数

1 个答案: