设计一个程序实现两个任意长的整数（包括正数和负数）、任意精度实数的算术运算。



提示：

（1）用动态链表存贮数据，每结点含一个整型变量，表示若干位数。

（2）整数输入和输出按中国对于长整数的习惯表示，每3位1组，组间用逗号隔开。

（3）实现长整数的加、减运算。

（4）程序运行界面清晰实用。-Design a program to achieve two arbitrarily long integers (including positive and negative), arbitrary-precision real number arithmetic. Note: (a) storing data with dynamic list, each node contains an integer variable, which means that a number of digits. (2) integer input and output by China for a long integer habit that every three group 1, group separated by commas. (3) to achieve a long integer addition, subtraction. (4) The program' s interface clear and practical.