写的一个简单的链表程序，有异常！

写的一个简单的链表程序，有错误求助！！
在creat函数里面 return head的时候提示错误cannot convert from 'struct node *' to 'struct node' 求高手修改。。。

#include <iostream.h>
#include <malloc.h>

struct node
{
int data;
struct node *next;
};

struct node creat(struct node *head)
{
struct node *pas,*p;
head=p=NULL;
int x;
cout<<"Enter an integer:";
cin>>x;
while(x!=0)
{
p=(struct node *)malloc(sizeof(struct node));
p->data=x;
p->next=NULL;
if(head==NULL)
head=pas=p;
else
{
pas->next=p;
pas=p;
}
cout<<"Enter another integer:";
cin>>x;
}
return head;

}

void main()
{
struct node *head=NULL;
creat(head);
cout<<"data of the first node:"<<head->data<<endl;
cout<<"data of the second node:"<<head->next->data<<endl;
}

------解决方案--------------------

C/C++ code


//按照C++语言改写了一下
#include <iostream>
using namespace std;

typedef struct node
{
   int data;
   struct node *next;
}node,*linklist;


void creat(linklist &head)  //此次用引用才能改变head
{
  node *pas,*p;
  p=NULL;
  int x;
  cout<<"Enter an integer:";
  cin>>x;
  while(x!=0)
  {
     //p=(struct node *)malloc(sizeof(struct node));
     p=new node;
     p->data=x;
     p->next=NULL;
     if(head==NULL)
     {
        head=p;
        pas=head;
     }
     else
     {
         pas->next=p;
         pas=p;
     }
     cout<<"Enter another integer:";
     cin>>x;
  }
}


int main()
{
      linklist head=NULL;
      creat(head);
      cout<<"data of the first node:"<<head->data<<endl;
      cout<<"data of the second node:"<<head->next->data<<endl;
      system("pause");
      return 0;
}

------解决方案--------------------

C/C++ code


//用函数的返回值
#include <iostream>
using namespace std;

typedef struct node
{
   int data;
   struct node *next;
}node;


node* creat(node* head)
{
  node *pas,*p;
  p=NULL;
  int x;
  cout<<"Enter an integer:";
  cin>>x;
  while(x!=0)
  {
     //p=(struct node *)malloc(sizeof(struct node));
     p=new node;
     p->data=x;
     p->next=NULL;
     if(head==NULL)
     {
        head=p;
        pas=head;
     }
     else
     {
         pas->next=p;
         pas=p;
     }
     cout<<"Enter another integer:";
     cin>>x;
  }
  return head;
}


int main()
{
      node *head=NULL;
      head=creat(head);//此处调用的时候要有返回值
      cout<<"data of the first node:"<<head->data<<endl;
      cout<<"data of the second node:"<<head->next->data<<endl;
      system("pause");
      return 0;
}

写的一个简单的链表程序，有异常 ！

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写的一个简单的链表程序，有异常！