删除指定学生链表中学生年龄为n的学生

#include <iostream>

using namespace std;

typedef struct Student
{
    int id;
    int age;
    Student *next;
}Student;

Student* createList(int num)
{
    Student * head = (Student *)malloc(sizeof(Student));
    Student *p;
    p = head;
    int count = 0;
    while (num > 0)
    {
        Student *node = (Student *)malloc(sizeof(Student));
        node->id = ++count;
        node->age = count;
        p->next = node;
        p = node;
        num--;
    }
    
    p->next = NULL;
    return head;
}

void deleteList(Student *&list,int age)
{
    Student *pre = list;
    Student *current = list->next;
    while (current != NULL)
    {
        if (current->age == age)
        {
            Student *tmp = current;
            pre->next = current->next;
            free(tmp);
            tmp    = NULL;
            break;
        }
        pre = pre->next;
        current = current->next;
    }
    
}

void printList(Student *list)
{
    Student *node = list->next;
    while(node != NULL)
    {
        cout << node->id << " ";
        node = node->next;
    }
    cout << endl;
}

int main(int argc, char const *argv[])
{
    Student * list = createList(5);

    printList(list);
    deleteList(list, 1);
    printList(list);
    
    return 0;
}