大家好,又见面了,我是全栈君
#include <stdio.h>
#define u8 unsigned char
static const int MAC_LENGTH = 6;
static u8 char1Tonum(u8 ch)
{
if((ch>='0')&&(ch<='9'))
return ch - '0';
else if ((ch>='a')&&(ch<='f'))
return ch - 'a' + 10;
else if ((ch>='A')&&(ch<='F'))
return ch - 'A' + 10;
else
return 0xff;
}
//简单的把字符串转为数字 (比如把MAC地址转为6个数字)
static u8 char2Tonum(u8 hch, u8 lch)
{
return ((char1Tonum(hch) << 4) | char1Tonum(lch));
}
static void charToArray(u8* array,u8* stringBuf)
{
for(int i =0,j=0;i<MAC_LENGTH;i++,j+=2)
{
array[i] = char2Tonum(stringBuf[j],stringBuf[j+1]);
printf("0x%x\n",array[i]);
}
}
int main()
{
u8 buf[MAC_LENGTH] = {0};
u8 bufMac[MAC_LENGTH*2+1] = "112233445566";
charToArray(buf,bufMac);
/* for(int i =0,j=0;i<MAC_LENGTH;i++,j+=2)
{
buf[i] = char2Tonum(bufMac[j],bufMac[j+1]);
printf("0x%x\n",buf[i]);
}
*/
return 0;
}/* 何问起 hovertree.com */
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