一、求表长度(验证型实验),二、插入元素操作(验证型实验),三、删除操作(验证型实验),四、 查找定位元素(验证型实验),五、 求表中的最大值元素，回main()函数前面，完善补充函数Tmax()，然后在这里调用完成（设计型实验）-First, find the table length (proof-test), two insert elements operating (proof-test), three delete operation (proof-test), four, look for the positioning element (proof-test), five, seeking maximum table value of the element, return main () function in front, perfect complement function Tmax (), then here call completion (design type test)