c++ - 编译器无法为类Error生成默认构造函数

Question

#include<iostream.h>
#include<conio.h>

class Node
{
  public:
  int data;
  Node *next;
  Node(int data)
  {
    data = data;
  }
};

class LinkedList
{
  Node *head;
  Node *tail;
  int n,data;
  Node nod;
  public:
  void cll()
  {
    cout<<"Enter the no. of nodes"<<endl;
    cin>>n;
    for(int i=0;i<n;i++)
    {
      cin>>data;
      nod = new Node(data);
      if(head == NULL)
      {
        head = nod;
        tail = nod;
      }
      else
      {
        tail->next = nod;
        tail = nod;
      }
    }
  }
};

void main()
{
  LinkedList l1;
  l1.cll();
}

当我编译这段代码时，我得到一个错误，说 编译器无法为该类生成默认构造函数。
而且，如果我定义了构造函数，则它显示此错误 无法找到默认的构造函数来初始化基类c++。
我该如何解决此错误，请帮助。

Answer 1

编译代码:

#include<iostream>//change here
//#include<conio.h> //change here

class Node
{
  public:
  int data;
  Node *next;
  Node(int data)
  {
    data = data;
  }
};

class LinkedList
{
  Node *head;
  Node *tail;
  int n,data;
  Node *nod;  //change here
  public:
  void cll()
  {
    cout<<"Enter the no. of nodes"<<endl;
    cin>>n;
    for(int i=0;i<n;i++)
    {
      cin>>data;
      nod = new Node(data);
      if(head == NULL)
      {
        head = nod;
        tail = nod;
      }
      else
      {
        tail->next = nod;
        tail = nod;
      }
    }
  }
};

int main() //change here
{
  LinkedList l1;
  l1.cll();
}