动态创建对象 C++

Question

好吧，我已经阅读了很多关于这个主题的不同帖子，但是 none 可以解决我的问题。

如何动态创建对象，并将它们存储在链表中。

我有这样一段代码，一个对象保存一个数字，然后它有一个指向下一个数字的指针，仅供表示。例如：17

一个->下一个=七个。两者都是相同 class.

的对象

    class Class{
private:
    int value;
    Class *pNext; //Points to the next object in the linked list.
public:
    Class(){value = 0;  }
    ~Class(){;}

    void setV(int x){ value = x;}
    int getV(){return value;}

    //void setP(Class *p){ pNext = p;} ?? Is this right?
 };

int main(){
Class *pFirst; //pointer to first element
Class *pLast;  //pointer to last element
Class *pCurrent; //pointer to current element

for(int i = 0; i < 4;i++){
    pCurrent = new Class;
    pCurrent->setV(i);
    //pCurrent->setP(NULL);
}

for(int i = 0; i < 4;i++){
    cout << pCurrent->getV() << " ";
}

return 0;
}

谢谢

Answer 1

要使列表永久化，您首先必须声明您的头节点，然后对于 for 循环中的每次迭代，添加到该列表中。

int main() 
{

    Class *pFirst; //pointer to first element
    pFirst->setV(0);
    Class *pLast;  //pointer to last element
    Class *pCurrent; //pointer to current element
    pFirst->pNext = pCurrent; // To keep track of the list via head


    for(int i = 0; i < 4;i++) 
    {
        pCurrent = new Class;
        pCurrent->setV(i);
        pCurrent->pNext = NULL;
    }

    for(int i = 0; i < 4;i++)
    {
        cout << pCurrent->getV() << " ";
    }

    return 0;
}

动态创建对象 C++

Creating objects dynamically c++

c++

pointers

class

linked-list

object