实现数值之间的进制转化，可以实现二进制、十进制和十六进制的转化，关键在于能够实现超过long int型的二进制转化，不受内存整形数据类型大小的限制-Values ​ ​ between hex ​ ​ conversion, binary, decimal, and hexadecimal conversion, the key is to be able to achieve more than long int type binary transfor