vc++相关程序问题

vc++相关程序问题以及其结构体与简单链表实践相关问题……谢谢了……

代码及运行结果如下：

#include <iostream>
#include <cstring>
using namespace std;

struct node
{
    int num;//学号
    double CPP;//成绩
    node* next; //指向下一个节点的变量指针
};

node* creat()
{
    int n, i;
    node* head = 0, * p, * t=0;
    cout << "请输入链表的长度：";
    cin >> n;
    for (i = 0; i < n; i++)
    {
        p = new node;
        cout << "请输入第" << i + 1 << "个学生的学号：";
        cin >> p->num;
        cout << "请输入第" << i + 1 << "个学生的成绩：";
        cin >> p->CPP;
        p->next = 0;
        if (head == 0)
        {
            head = p;
            t = head;
        }
        else
        {
            t->next = p;
            t = p;
        }
    }
    cout << "链表创建完成！" << endl;
    return head;
}

void print(node* head)
{
    node* p = head;
    cout << "显示链表数据：" << endl;
    while (p)
    {
        cout << "学号：" << p->num << "\t成绩：" << p->CPP << endl;
        p = p->next;
    }
}

void release(node* head)
{
    node* p;
    cout << "释放链表" << endl;
    while (head)
    {
        p = head->next;
        delete head;
        head = p;
    }
    head = 0;
}

int main()
{
    node* head = creat();
    print(head);
    release(head);
    return 0;
}

需要加几个学生信息呢

#include <iostream>
using namespace std;
struct node
{
    int num;
    double CPP;
    struct node *next;
}
struct node * create()
{
    struct node *head = new struct node;
    head->next = NULL;
    struct node *p = head;
    for(int i=0;i<5;i++)
    {
        struct node * q = new struct node;
        cin>>q->num>>q->CPP;
        q->next = NULL;
        p->next = q;
        p = q;
    }
    return head;
}
void print(struct node *head)
{
       struct node *p = head;
       while(p->next != NULL)
       {
           cout<<p->num<<","<<p->CPP<<endl;
           p= p->next;
       }
}

void release(struct node *head)
{
       struct node *p = head,*q;
       while(p != NULL)
        {
             q = p->next;
             delete p;
             p = q;
        }
}

int main()
{
    struct node *head = create();
    print(head);
    release(head);
    return 0;
}

struct node
{
    int num;
    double CPP;
    node *next;
};

node *cerat()
{
    node *h = new node;
    node *p, *q;
    int n;
    q = h;
    q->next = NULL;
    cout << "输入学号和成绩：(0结束)\n";
    while (1)
    {
        cin >> n;
        if (n == 0)
            return h;
        p = new node;
        p->num = n;
        cin >> p->CPP;
        p->next = NULL;
        q->next = p;
        q = p;
    }
    return h;
}
void print(node *head)
{
    node *p = head->next;
    while (p)
    {
        cout << p->num << "  " << p->CPP << endl;
        p = p->next;
    }
}

void release(node *head)
{
    node *q, *p = head;
    while (p)
    {
        q = p->next;
        delete p;
        p = q;
    }
}

int main()
{
    node *head = cerat();
    print(head);
    release(head);

    return 0;
}

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