#include "stdio.h" 
/*reverse output a list*/
#include "stdlib.h"
#include "stdio.h"
struct list
{
	int data;
	struct list *next;
};
typedef struct list node;
typedef node *link;
void main()
{
	link ptr,head,tail;
	int num,i;
	tail= ( link ) malloc ( sizeof ( node ) );
	tail->next=NULL;
	ptr=tail;
	printf ( "\nplease input 5 data==>\n" );
	for ( i=0; i<=4; i++ )
	{
		scanf ( "%d",&num );
		ptr->data=num;
		head= ( link ) malloc ( sizeof ( node ) );
		head->next=ptr;
		ptr=head;
	}
	ptr=ptr->next;
	while ( ptr!=NULL )
	{
		printf ( "The value is ==>%d\n",ptr->data );
		ptr=ptr->next;
	}
}