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.-The establishment of a linked list, each node include the following: Student ID, name, gender, age. Enter one of age, if the linked list of nodes contained in this age of age, then by dele