（1）掌握串的顺序存储结构；
（2）验证顺序串及其基本操作的顺序；
（3）掌握串的操作特点。
1.2 实验要求：
（1）定义一个包含串的求长度、拼接、比较大小等基本操作的头文件函数原型；
（2）实现串的求长度、拼接、比较大小等基本操作。((1) mastering the sequential storage structure of the string;

(2) the sequence of verifying the sequence of sequence and its basic operations;

(3) mastering the operating characteristics of the string.

1.2 the experiment requires:

(1) define a head file function prototype that contains basic operations such as length, splicing and comparison size.

(2) the basic operation of realizing the length, splicing and comparison of the string.)