单链表的创建，遍历输出及释放

来源：互联网发布：mac装windows 编辑：程序博客网时间：2024/05/21 08:39

#include <iostream>
using namespace std;

typedef class List
{
public:
int num;
char name[10];
class List* next;
}Node,*Link;

//创建链表
Link Create_List(Link pHead)
{
int n;
cout<<"请输入学生人数：";
cin>>n;

//创建头结点
pHead=new Node;
if(!pHead)
{
cout<<"Memory allocate failed\n";
exit(-1);
}

cout<<"\n请输入编号：";
cin>>pHead->num;
cout<<"请输入姓名：";
cin>>pHead->name;
pHead->next=NULL;

//创建剩余结点
Link Pointer=pHead;
for(int i=1;i<n;i++)
{
Link newNode=new Node;

  if(!newNode)
  {
   cout<<"Memory allocate failed\n";
   exit(-1);
  }

  cout<<"请输入编号：";
  cin>>newNode->num;
  cout<<"请输入姓名：";
  cin>>newNode->name;
  newNode->next=NULL;

Pointer->next=newNode;
Pointer=newNode;
}
return pHead;
}

//遍历输出链表
void Print_List(Link pHead)
{

cout<<"\n 编号\t姓名\n============="<<endl;

Link Pointer=pHead;
while(NULL!=Pointer)
{
cout<<" "<<Pointer->num<<"\t"<<Pointer->name<<endl;
Pointer=Pointer->next;
}
cout<<endl;
}

//释放链表
void Free_List(Link pHead)
{
while(NULL!=pHead)
{
  Link Pointer=pHead;
  pHead=pHead->next;
  delete Pointer;
}
}

int main()
{
Link pHead=new Node;
if(!pHead)
{
cout<<"Memory allocate failed\n";
exit(-1);
}

//创建链表
pHead=Create_List(pHead);

//遍历输出链表
Print_List(pHead);

//释放链表
Free_List(pHead);
return 0;
}

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