Creación y salida de listas vinculadas (resultados de aprendizaje del lenguaje C)

#include<stdio.h>

typedef struct NODE {
    
    
	int data;
	struct NOdE* next;
}Node;

void CreateLink1() //有头结点的头插法
{
    
    //注意：此法插入会使输出时反向
	Node* head = malloc(sizeof(Node));  //申请头结点
	head->next = NULL;   
	int num;
	while (1) {
    
    
		scanf("%d", &num);
		if (num < 0)
			break;
		Node* p = malloc(sizeof(Node)); //申请新的结点空间，p是栈区变量，每循环完毕都被释放；
		p->data = num;
		p->next = head->next;
		head->next = p;
	}
}

Node* createLink2(int n)//有头结点的尾部插入
{
    
    
	Node* head = malloc(sizeof(Node));
	if (head == NULL) return NULL;
	head->next = NULL;
	Node* q = head;
	while (n) {
    
    
		int num = 0;
		scanf("%d", &num);
		N* p = malloc(sizeof(N));
		p->data = num;
		p->next = NULL;
		q->next = p; //q用于保存上一个节点的地址
		q = q->next;
		n--;
	}
	return head;
}
void PrintLink(Node* h)
{
    
    
	while (h) {
    
    //输出
		printf("%d ", h->data);
		h = h->next;
	}
}

void FreeLink(Node* p)
{
    
    
	Node* t = NULL;  //定义结构体指针；
	while (p) {
    
    
		t = p->next;  //下一个结点的地址暂存于t
		free(p);
		p = t;
	}
}


int main()
{
    
    
	Node* head = (Node*)malloc(sizeof(Node)); //申请头结点空间
	head->next = NULL;  //默认将头结点的地址域赋空
	int n;
	scanf("%d", &n);
	CreateLink2(head, n);
	PrintLink(head->next);
	return 0;
}