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#include<iostream> #include<stdlib.h> using namespace std; typedef struct Node{
int num; Node *next; }Node;//定义节点 /* init(头结点,初始化节点个数) 使用尾插法初始化链表 */ void init(
Node*head,int number){//初始化链表长度 Node *head2=head; for(int i=0;i<number;i++){
//尾插法 Node *node=(Node *)malloc(sizeof(Node));
//创建一个节点,因为是malloc函数分配,分配的空间并不会因为函数运行结束而结束 node->num=i;//给节点赋值 head2->next=node;
//将新节点的地址会给上一个节点的next,形成链表 head2=node;//移动到新节点,也就是最后一个节点,然后继续循环 } head2->next=
NULL;//最后一个节点,next的值要为NULL } void init2(Node *head,int number){//初始化链表长度 Node *
head2; for(int i=0;i<number;i++){//头插法 Node *node=(Node *)malloc(sizeof(Node));
//创建一个节点,因为是malloc函数分配,分配的空间并不会因为函数运行结束而结束 node->num=i;//给节点赋值 if(i==0)node->
next=NULL;//第一个节点,显然next应该是NULL else node->next=head2; head2=node; } head->next=
head2; } void print(Node *head){ head=head->next;//头结点没有数值,所以先移动到下一个节点 while(
head!=NULL){ cout<<head->num<<" "; head=head->next;//移动到下一个节点 } cout<<endl; }
void print2(Node *head){ head=head->next;//头结点没有数值,所以先移动到下一个节点 while(head!=NULL)
{ cout<<head->num<<" "; head=head->next;//移动到下一个节点 } cout<<endl; } int main(int
argc, char const *argv[]) { Node *head=(Node *)malloc(sizeof(Node)); init(head,5
); print(head); // init2(head,5); // print2(head); return 0; }