16进制转字符串

废话不多说，直接上代码

void HexToString(char *dst,const unsigned char *src,int sLen)   // hex to ASCII
{
    const char* hexDigits = "0123456789ABCDEF";
    int a,b,j = 0,k = 0;
    char c;
    for(k = 0; k < sLen; k++)
    {
        c = src[k];
        if((c & 0x80) > 0)      // c > 128
        {
            a = c & 0x0F;
            b = c & 0xF0;
            dst[j++] = hexDigits[(a+b)/16];
            dst[j++] = hexDigits[a%16];
        }
        else
        {
            dst[j++] = hexDigits[c/16];
            dst[j++] = hexDigits[c%16];
        }
    }
    dst[j] = '\0';
}