#include <iostream>
using namespace std;
struct node
{
    int data;
    node *next;
};

int init()
{
    node * head;
    head=NULL;
}
int insert(node a)
{

    while(p->data!=0)
    {
        p=new node;
        cout>>"please enter some node:";cin>>a;
        head=p;
        p->data=a.data;
        p=p->next;
    }
    return head;
}
void find(node b)
{
    cout<<"please enter b:"<<endl;cin>>b;
    while(p!=NULL)
    {
        if(b.data==p->data)
        {
            cout<<"have find node b"<<endl;
            break;
        }
        else
            p=p->next;
    }
}
void main()
{
    node *p;

    init();
    insert(a);
    find(b);
}

难道没有人知道

说的好，这就是我平时不写代码的后果