将16进制字符串转换为16进制数的例程
工作中遇到了该问题，回家参考一篇文章实验了下，是可以的：
/***********************************************************************
@
@ 函数名 : strtohex.c
@ 功能 : 将字符串表示的16进制转化为真正的16进制
@ 作者 : xiangpingli
@ 日期 : 2012-08-28
@
************************************************************************/
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
printf("\n------------------------------------------\n");
char szValue[]= "0x11";
int nValue1 = 0;
int nValue2 = 0;
sscanf(szValue,"%x",&nValue1);
printf("0x%x\n",nValue1);
nValue2 = (int)strtol(szValue, NULL, 16);
printf("0x%x\n",nValue2);
printf("\n------------------------------------------\n");
int i = 0;
char hwid[128] = {0};
char tmp[8] = {0};
int hwidhex[128] = {0};
strcpy(hwid, "00112233445566778899aabbccddeeff");
printf("hwid:%s\n", hwid);
for(i = 0; i < 32; i+=2)
{
tmp[0] = '0';
tmp[1] = 'x';
tmp[2] = hwid[i];
tmp[3] = hwid[i+1];
tmp[4] = '\0';
printf("tmp:%s\n", tmp);
hwidhex[i/2] = (int )strtol(tmp, NULL, 16);
printf("hwidhex[i/2]:%x\n", hwidhex[i/2]);
}
printf("\n------------------------------------------\n");
int hwidhex2[128] = {0};
printf("hwid:%s\n", hwid);
for(i = 0; i < 32; i+=2)
{
tmp[0] = '0';
tmp[1] = 'x';
tmp[2] = hwid[i];
tmp[3] = hwid[i+1];
tmp[4] = '\0';
printf("tmp:%s\n", tmp);
sscanf(tmp, "%x", &hwidhex2[i/2]);
printf("hwidhex[i/2]:%x\n", hwidhex2[i/2]);
}
return 0;
}
运行结果：
root@xiangpingli:/home/linux/Desktop/samba/exercise/build# ../binary/strtohex ------------------------------------------ 0x11 0x11 ------------------------------------------ hwid:00112233445566778899aabbccddeeff tmp:0x00 hwidhex[i/2]:0 tmp:0x11 hwidhex[i/2]:11 tmp:0x22 hwidhex[i/2]:22 tmp:0x33 hwidhex[i/2]:33 tmp:0x44 hwidhex[i/2]:44 tmp:0x55 hwidhex[i/2]:55 tmp:0x66 hwidhex[i/2]:66 tmp:0x77 hwidhex[i/2]:77 tmp:0x88 hwidhex[i/2]:88 tmp:0x99 hwidhex[i/2]:99 tmp:0xaa hwidhex[i/2]:aa tmp:0xbb hwidhex[i/2]:bb tmp:0xcc hwidhex[i/2]:cc tmp:0xdd hwidhex[i/2]:dd tmp:0xee hwidhex[i/2]:ee tmp:0xff hwidhex[i/2]:ff ------------------------------------------ hwid:00112233445566778899aabbccddeeff tmp:0x00 hwidhex[i/2]:0 tmp:0x11 hwidhex[i/2]:11 tmp:0x22 hwidhex[i/2]:22 tmp:0x33 hwidhex[i/2]:33 tmp:0x44 hwidhex[i/2]:44 tmp:0x55 hwidhex[i/2]:55 tmp:0x66 hwidhex[i/2]:66 tmp:0x77 hwidhex[i/2]:77 tmp:0x88 hwidhex[i/2]:88 tmp:0x99 hwidhex[i/2]:99 tmp:0xaa hwidhex[i/2]:aa tmp:0xbb hwidhex[i/2]:bb tmp:0xcc hwidhex[i/2]:cc tmp:0xdd hwidhex[i/2]:dd tmp:0xee hwidhex[i/2]:ee tmp:0xff hwidhex[i/2]:ff
参考文章：
http://blog.csdn.net/ixidof/article/details/6081217