Question

我有一个包含药物的列表（动态矢量），我想从列表中打印所有药物，但它会从内存中打印一些数字。例如：

Give the medicine's ID: 1
Give the medicine's name:alg
Give the medicine's concentration: 30
Give the medicine's quantity: 40

打印：

The medicine's ID is: 4215400
The medicine's name is: 
The medicine's concentration is: 3.47235e+230
The medicine's quantity is: 2686544

这些是打印功能：

 void Console::printMedicine(Medicine* m){
        int ID = m->getID();
        string name = m->getName();
        double concentration = m->getConcentration();
        int quantity = m->getQuantity();
        cout<<"\nThe medicine's ID is: "<<ID<<"\n";
        cout<<"The medicine's name is: "<<name<<"\n";
        cout<<"The medicine's concentration is: "<<concentration<<"\n";
        cout<<"The medicine's quantity is: "<<quantity<<"\n";
    }

    void Console::printAllMedicines(){
        DynamicVector<Medicine*>* medList = ctrl->getAllMeds();
        for(int i=0; i < medList->getLen(); i++){
            Medicine* m = medList->getElementAtPosition(i);
            printMedicine(m);
        }
    }

这是getElementAtPosition函数：

template <typename Element>
Element DynamicVector<Element>::getElementAtPosition(int pos){
    return this->elems[pos];
}

这是医学课，只有私人部分：

class Medicine{
private:
    int ID, quantity;
    double concentration;
    string name;

这是存储库中medList的声明：

class Repository{
    public:
        DynamicVector<Medicine*>* medList;

医学课中的构造函数和getter：

  Medicine::Medicine(){ //implicit constructor
        this->ID=0;
        this->concentration=0;
        this->name="";
        this->quantity=0;
    }

    Medicine::Medicine(int ID, string name, double concentration, int quantity){ //constructor with parameters
        this->ID=ID;
        this->name=name;
        this->concentration=concentration;
        this->quantity=quantity;


int Medicine::getID(){
    return this->ID;
}

string Medicine::getName(){
    return this->name;
}

double Medicine::getConcentration(){
    return this->concentration;
}

int Medicine::getQuantity(){
    return this->quantity;

        }

getAllMeds和getAll函数：

DynamicVector<Medicine*>* Controller::getAllMeds(){
    return repo->getAll();
}

DynamicVector<Medicine*>* Repository::getAll(){
    return medList;
}

我试了几个小时来解决这个问题，但我无法理解问题出在哪里。我做错了什么？

Answer 1

我假设您的Medicine实例是由getAllMeds（）创建的。您确定要将好的值传递给构造函数吗？你看到的那些价值观对我来说就像是未初始化的记忆。它们每次都是相同的奇怪值，还是会改变？

打印内存中的奇怪数字

1 个答案: