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

struct point{
	float x;
	float y;
	point *next;
};
point * create(int count)
{
	point *p,*h,*s;


	h=(point *)malloc(sizeof(struct point));

	if(h==NULL)
	{
		cout<<"Malloc memory error"<<endl;
	}
/********************************************Init head**********************************/
	h->x=NULL;
	h->y=NULL;
	h->next=NULL;
/********************************************Init head**********************************/

	p=h;
	for(int i=0;i<count;i++)
	{
		s=(point *)malloc(sizeof(struct point));
		if(s==NULL)
		{
			cout<<"Malloc memory error"<<endl;
		}


		cout<<"cin X"<<endl;
		cin>>s->x;
		cout<<"cin Y"<<endl;
		cin>>s->y;

		s->next=NULL;
		p->next=s;
	
		p=p->next;
	}
		return h;


}

int main(void)
	{
		point  *xy;
		int number;
		cout<<"请输入坐标点的数目"<<endl;
		cin>>number;
		xy=create(number);

		if(xy!=NULL)
		{
			cout<<xy->x<<","<<xy->y<<endl;
			xy=xy->next;
		}

		return 0;
}

compile and link is ok ,but can't write correctlly

#include <iostream> 
#include <malloc.h> 
#include <stdlib.h> 
using namespace std;

struct point{ 
    float x; 
    float y; 
    point *next; 
}; 
point * create(int count) 
{ 
    point *p,*h,*s; 


    h=(point *)malloc(sizeof(struct point)); 

    if(h==NULL) 
    { 
        cout  << "Malloc memory error" << endl; 
    } 
    /********************************************Init head**********************************/ 
    h->x=NULL; 
    h->y=NULL; 
    h->next=NULL; 
    /********************************************Init head**********************************/ 

    p=h; 
    for(int i=0;i <count;i++) 
    { 
        s=(point *)malloc(sizeof(struct point)); 
        if(s==NULL) 
        { 
            cout<<"Malloc memory error"<<endl; 
        } 


        cout <<"cin X"<<endl; 
        cin>>s->x; 
        cout <<"cin Y" <<endl; 
        cin>>s->y; 

        s->next=NULL; 
//        p->next=s; 
        if (i == 0)
        {
            p = s;
            h = p;
        }
        else
        {
            p->next = s;
            p = p->next;
        }
    //    p=p->next; 
    } 
    return h; 


} 

int main(void) 
{ 
    point  *xy; 
    int number; 
    cout <<"请输入坐标点的数目"<<endl; 
    cin>>number; 
    xy=create(number); 

    if(xy!=NULL) 
    { 
        cout <<xy->x <<"," <<xy->y <<endl; 
        xy=xy->next; 
    } 

    return 0; 
}