网络工程师：常用的几种码制转换

 　#include
　　#include
　　#include
　　#include /**此宏定义摘自51bbs Youth发表***/
　　#define LongToBin(n) " (" ((n >> 21) & 0x80) | " ((n >> 18) & 0x40) | " ((n >> 15) & 0x20) | " ((n >> 12) & 0x10) | " ((n >> 9) & 0x08) | " ((n >> 6) & 0x04) | " ((n >> 3) & 0x02) | " ((n ) & 0x01) " ) #define Bin(n) LongToBin(0x##n##l) /********** HEX转BCD******/ /***bcd_data(< 0x255,>0)***/
　　unsigned char BCD2HEX(unsigned int bcd_data) { unsigned char temp; temp=((bcd_data>>8)*100)|((bcd_data>>4)*10)|(bcd_data&0x0f); return temp; } /********** HEX转BCD******/ /***hex_data(< 0xff,>0)****/
　　unsigned int HEX2BCD(unsigned char hex_data)
　　{ unsigned int bcd_data;
　　unsigned char temp; temp=hex_data%100;
　　bcd_data=((unsigned int)hex_data)/100