使用正则表达式对输入的数据即时校验。包括整型,非负整数,非正整数,浮点数,非负浮点数,非正浮点数,中文,英文,大写英文,小写英文,数字和英文,数字和英文或下划线,日期。-Using regular expressions for real-time validation of data input. Including integer, non-negative integers, non-positive integer, floating-point, non-negative floati

给定程序中,函数fun的功能是将形参给定的字符串、整数、浮点数写到文本 文件中，再用字符方式从此文本文件中逐个读入并显示在终端屏幕上。 -Given program, the function fun feature is the parameter given string, integer, float written text File, and then one by one to read from character mode and displayed on th