这个程序的作用是计算并输出运算表达式的值。本程序支持+、-、*、/、^这五个运算操作符，并支持()以及sin()、cos()、tan()、log()、ln()等函数，支持()、函数的多层嵌套。 本程序有一定的容错及判错功能-A program that evaluates an numeric expression, supports five operators: +, -, *, /, ^, and (), also supports functions like sin, cos, tan

将字符串重排。规则如下： 1，每个字符串只包括数字字符和小写字母 2，原始字符串被分割成若干个子串，后一个字符串是前一个字符串的字串-The string rearrangement. Rules are as follows: 1, each string includes only numeric characters and lowercase letters 2, the original string is divided into several sub-string aft

This program creates a text file, copies the binary value of an input file and prints it to the text file as ASCII numeric value.

大数运算，当整形数字溢出时，实现大数之间的各种数学运算-Computing large numbers, numeric overflow when shaping to achieve a variety of mathematical operations between large numbers