C语言：建立一个链表，每个结点包括：学号、姓名、性别、年龄。输入一个年龄，如果链表中的结点所包含的年龄等于此年龄，则将此结点删去；输入一个学生的信息，插入到链表的第3个位置。

要求：用CreateTable函数建立链表；用DeleteNode函数删除满足要求的结点；用Output函数输出链表，用InsertNode函数插入结点。

-C language: the establishment of a linked list, each node includes: Student ID, name, gender, age. Enter an age, if the list of nodes contained in this age of age, then this node deleted　enter a student' s information, inserted into the list the first three positions. Requirements: use CreateTable functions to establish the list　with DeleteNode meet the requirements of a function to delete the junction point　with the Output function, the output list, using the function inserts InsertNode nodes.