熟练掌握并灵活运用C语言知识点，特别是指针和结构，以及文件操作。

熟练掌握并灵活运用常见的数据结构数组,链表和树。

熟练掌握并灵活运用相关的检索与排序算法。

-Proficiency and flexibility in the use of the C language knowledge, especially pointer and structure, as well as file operations. Proficiency and flexibility in the use of a common data structure array, linked lists and trees. Proficiency and flexibility in the use of retrieval and sorting algorithms.