一个可以对输入的16进制字符串求其校验和的小程序,只要按照如下格式输入既可计算:12 34 1a 3b 4d，然后点计算就会输入其校验和 -To enter a string of 16 hexadecimal checksum for its small program, as long as the input format can be in accordance with the following calculation: 12 34 1a 3b 4d, then calculat