链表的基本概念以及静态链表和动态链表

链表概念：

链表使用说明：

画图示意：

静态链表

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
typedef struct LinkNode 
{
	int num;
	LinkNode* next;
}Lk,*lk;
//Lk ------>struct LinkNode
//lk----->struct LinkNode*
void test01()
{
	//静态链表
	//Lk ------>struct LinkNode
	Lk node1 = {10,NULL};
	Lk node2 = { 20,NULL };
	Lk node3 = { 30,NULL };
	Lk node4 = { 40,NULL };
	Lk node5 = { 50,NULL };
	//建立关系
	node1.next = &node2;
	node2.next = &node3;
	node3.next = &node4;
	node4.next = &node5;
	node5.next = NULL;

	//lk----->struct LinkNode*
	lk nodeCurrent = &node1;
	//遍历输出
	while (nodeCurrent)
	{
		printf("%d\n", nodeCurrent->num);
		nodeCurrent = nodeCurrent->next;
	}
}
int main()
{
	test01();
	return 0;
}

动态链表

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
typedef struct LinkNode 
{
	int num;
	LinkNode* next;
}Lk,*lk;
//Lk ------>struct LinkNode
//lk----->struct LinkNode*
void test01()
{
	//动态链表
	lk node1 = (lk)malloc(sizeof(Lk));
	lk node2 = (lk)malloc(sizeof(Lk));
	lk node3 = (lk)malloc(sizeof(Lk));
	lk node4 = (lk)malloc(sizeof(Lk));
	lk node5 = (lk)malloc(sizeof(Lk));
	//给数据赋值
	node1->num = 10;
	node2->num = 20;
	node3->num = 30;
	node4->num = 40;
	node5->num = 50;
	//建立联系
	node1->next = node2;
	node2->next = node3;
	node3->next = node4;
	node4->next = node5;
	node5->next = NULL;
	//lk----->struct LinkNode*
	lk nodeCurrent = node1;
	//遍历输出
	while (nodeCurrent)
	{
		printf("%d\n", nodeCurrent->num);
		nodeCurrent = nodeCurrent->next;
	}
	//释放堆区开辟内存
	free(node1);
	free(node2);
	free(node3);
	free(node4);
	free(node5);
	//防止野指针出现
	node1 = NULL;
	node2 = NULL;
	node3 = NULL;
	node4 = NULL;
	node5 = NULL;

}
int main()
{
	test01();
	return 0;
}