1. 本程序实现计算任意长的整数的四则运算. 以用户和计算机对话的方式,先后输入数字的最多位数,然后程序就计算并显示出这两个数的运算.

2. 利用双向循环链表现实长整数的存储,每个结点含一个整形变量.输入的形式以回车结束,可以直接输入正数或负数,程序会过滤掉无效的字符.按中国对于长整数的表示习惯,每四位一组,除数字和位于首位置的负号外,其它一切字符都将作为分隔符,连续多个分隔符当一个处理.但不使用分隔符也不影响结果.

-1. This procedure calculating the arbitrary implementation of long integer arithmetic. To the user and computer dialogue, has a maximum input of the median figure, and then the procedure is calculated and shown on both the number of computing this. 2. The use of two-cycle chain Table reality long integer storage, each node containing a plastic variables. enter to enter the end of the form, you can directly enter the positive or negative, the program will filter out invalid characters. according to the Chinese for a long integer used to express each One group of four, with the exception of the first figure and is located in the negative position, the other will be all the characters as a separator, row separator when a number of treatment. but do not use the separator does not affect the results.