txt文件循环插入固定字符,可任意设置插入字符的循环长度，插入的内容可以是文字，也可以是换行符。特别适合文件获取16进制码值的时候文本过长没有换行符时使用。程序中没有进行判断中文时拆分的问题，如需判断，自己再往里面增加判断。-txt file loop insertion fixed character length of the loop can be set into the characters, inserted text, can also be a newline. Particularly suitable file to get the hexadecimal code value when the text is too long without using line breaks. Program does not judge Chinese split, For the judge, he re-entered, increase judgment.