创建单链表并赋值，要求遍历能输出1~9

      用表头创建单链表，用头插法创建链表，遍历的结果是9 8 7 6 5 4 3 2 1

      具体的源程序如下：

#include 
#include 

#define OK            0
#define ERROR        -1
#define MALLOC_ERROR -2 

typedef int ElementType;
typedef struct node
{
	ElementType data;    
	struct node *next;   
}Node;
typedef Node *PNode;  

int Create_List_Head(PNode h, ElementType data)
{
	if (h == NULL)
	{
		return ERROR;
	}
	
	PNode node = (PNode)malloc(sizeof(Node)/sizeof(char));
	if (node == NULL)
	{
		return MALLOC_ERROR;
	}
	node->data = data;
	node->next = h->next;
	h->next = node;
	
	return OK;
}



void DisPlay(PNode h)
{
	if (h == NULL)
	{
		return;
	}
	PNode temp = h->next;  // 链表第一个结点指针
	while (temp)
	{
		printf ("%4d", temp->data);
		temp = temp->next;
	}
	
	printf ("\n");
}

int main()
{
	PNode head_node = (PNode)malloc(sizeof(Node)/sizeof(char));
	if (head_node == NULL)
	{
		return ERROR;
	}
	head_node->next = NULL;   
	
	
	int i = 1;
	for (i = 1; i < 10; i++)
	{
		
 		if (Create_List_Head(head_node, i) != OK)
		{
			return ERROR;
		}  
	
	}
	DisPlay(head_node);
	
	return 0;
}