C++ -- 创建学生单链表，以输入学号0为创建结束标志

题目：

代码（用户友好版）：

#include
#include
using namespace std;

typedef struct stu
{
	int num;
	char name[10];
}stu;
typedef struct LNode
{
	stu data;
	struct LNode* next;
}LNode,*linkList;
void CreateList(linkList& head)
{//创建链表
	linkList q, rear;
	rear = head;
	stu s = { 1 };
	cout << "请输入学号：";
	cin >> s.num;
	cout << "请输入姓名：";
	cin >> s.name;
	while (s.num != 0)
	{
		q = new LNode;
		q->data = s;
		q->next = NULL;
		rear->next = q;
		rear = q;
		rear->next = NULL;
		cout << "请输入学号：";
		cin >> s.num;
		cout << "请输入姓名：";
		cin >> s.name;
	}
	rear->next = NULL;
}

void PrintList(linkList &head)
{//打印链表数据
	linkList p = head->next;
	if (p == NULL) {
		cout << "没有学生信息！";
	}
	else {
		cout << "Id" << 't' << "name" << endl;
		while (p) {	
			cout << p->data.num << 't' << p->data.name << endl;
			p = p->next;
		}
	}
	system("pause");
}
void InsertList(linkList& head,linkList &p0)
{//按学号大小插入链表
	linkList p, pFront;
	pFront = head;
	p = head->next;
	while (p) {
		if (p0->data.num > p->data.num) {    //当要插入的学号大于当前结点
			pFront = p;
			if (p->next == NULL)             //当当前结点是最后一个结点，跳出循环
				break;
			else
				p = p->next;	
		}
		if (p0->data.num < p->data.num) {    //当要插入的结点学号小于当前结点，且当前结点不是                        
                                             //最后一个结点,跳出循环
			break;
		}
		if (p0->data.num == p->data.num) {    //当要插入的结点的学号已存在
			cout << "学号已存在！";
			system("pause");
			return;
		}
	}

	if (pFront->next == NULL) {    //尾插
		p0->next = NULL;
		p->next = p0;
		
	}
	else {

		p0->next = p;
		pFront->next = p0;
	}

	system("pause");
}
void DeleteList(linkList& L, int num)
{//删除链表
	linkList p, Frontp;
	Frontp = L;
	p = L->next;
	if (L->next == NULL) {
		cout << "链表为空！无法删除！" << endl;
		system("pause");
		return;
	}
	while (p)
	{
		if (p->data.num == num) {
			Frontp->next = p->next;
			delete p;
			break;
		}
		else {
			Frontp = p;
			p = p->next;
		}
	}
}
void DestroyList(linkList& L)
{//销毁链表
	linkList p;
	while (L) {
		p = L;
		L = L->next;
		delete p;
	}
}
void Menu(linkList &L)
{	
	linkList p = new LNode;
	cout << "  *********************" << endl;
	cout << "|    1.插入学生信息    |" << endl;
	cout << "|    2.删除学生信息    |" << endl;
	cout << "|    3.初始学生信息    |" << endl;
	cout << "|    4.浏览学生信息    |" << endl;
	cout << "|    5.退出系统        |" << endl;
	cout << "|    （请选择1~6）     |" << endl;
	cout << "  *********************" << endl;

	int choice;
	int id;
	int choice_2;
	cin >> choice;
	switch (choice)
	{
	case 1:
		
		cout << "请输入学号：";
		cin >> p->data.num;
		cout << "请输入姓名：";
		cin >> p->data.name;
		InsertList(L,p);
		break;
	case 2:
		cout << "请输入你想删除学生信息的学号：";
		cin >> id;
		DeleteList(L, id);
		break;
	case 3:
		cout << "此操作会丢失所有学生信息，请谨慎操作！" << endl;
		cout << "输入1继续操作，任意键返回";
		cin >> choice_2;
		if (choice_2 == 1) {
			DestroyList(L);
			exit(0);
		}
		else
			return;
		break;
	case 4:
		PrintList(L);
		break;
	case 5:
		exit(0);
	default:
		cout << "输入错误！";
		break;
	}
}
int main()
{
	linkList head = new LNode;
	head->next = NULL;
	CreateList(head);
	system("cls");
	while (1) {
		Menu(head);
		system("cls");
	}
}