#include<iostream>
#include<stdlib.h>
using namespace std;
int n;
typedef struct node
{ int data;
struct node *next;
}node,*list;
void createlist(list *L)
{*L=(list)malloc(sizeof(node));
(*L)->next=NULL;
cout<<"please enter element's number:"<<endl;
list p,r;
r=*L;
cin>>n;
cout<<"enter data:"<<endl;
for(int i=0;i<n;i++)
{p=(list)malloc(sizeof(node));
cin>>p->data;
r->next=p;
r=p;
}
r->next=NULL;
}
void outputlist(list *L)
{
cout<<"your list is:"<<endl;
for(int i=0;i<n;i++)
{cout<<(*L)->next->data<<"\t";
*L=(*L)->next;
}
}
void insertlist(list *L)
{int i;
list q;
cout<<"enter will insert's data:"<<endl;
cin>>i;
while(i>(*L)->next->data)
*L=(*L)->next;
if(*L)
{q=(list)malloc(sizeof(node));
q->data=i;
q->next=(*L)->next;
(*L)->next=q;}
else
{*L=(*L)->next;
    q=(list)malloc(sizeof(node));
q->next=(*L)->next;
(*L)->next=q;
}
n=n+1;
cout<<"your list is:"<<endl;
for(int j=0;j<n;j++)
{cout<<(*L)->next->data<<"\t";
*L=(*L)->next;
}
}
int main()
{list L1;
createlist(&L1);
outputlist(&L1);
insertlist(&L1);
return 0;
}

ok understand I will do it

#include<iostream>
#include<stdlib.h>
using namespace std;
int n;
typedef struct node
{ int data;
struct node *next;
}node,*list;
void createlist(list *L)
{*L=(list)malloc(sizeof(node));
(*L)->next=NULL;
cout<<"please enter element's number:"<<endl;
list p,r;
r=*L;
cin>>n;
cout<<"enter data:"<<endl;
for(int i=0;i<n;i++)
{p=(list)malloc(sizeof(node));
cin>>p->data;
r->next=p;
r=p;
}
p->next=NULL;
}
void outputlist(list *L)
{list r;
r=*L;
cout<<"your list is:"<<endl;
for(int i=0;i<n;i++)
{cout<<r->next->data<<"\t";
r=r->next;
}
cout<<endl;
}
void insertlist(list *L)
{int i;
list q,p,r,s,t;
r=*L;
t=*L;
p=(*L)->next;
for(int h=0;h<n;h++)
t=t->next;
cout<<"enter will insert's data:"<<"\t";
cin>>i;
if(i<p->data)
{s=(list)malloc(sizeof(node));
s->data=i;
s->next=r->next;
r->next=s;
}
else
if(t->data<i)
{q=(list)malloc(sizeof(node));
q->data=i;
q->next=t->next;
t->next=q;
}
else
{
    while(i>p->next->data)
p=p->next;
q=(list)malloc(sizeof(node));
q->data=i;
q->next=p->next;
p->next=q;
}
n=n+1;
cout<<"your list is:"<<endl;
for(int j=0;j<n;j++)
{cout<<(*L)->next->data<<"\t";
*L=(*L)->next;
}
cout<<endl;
}
int main()
{list L1;
createlist(&L1);
outputlist(&L1);
insertlist(&L1);
return 0;
}
笨办法勉强做出来了 谢谢大家指导