求解__ConvertHexStringToBytePtr

[zhurizeng]

void ConvertHexStringToBytePtr(CHAR *pHexString, BYTE *pData, int *dataLength)
{
CHAR *pHexStringData = pHexString;
*dataLength = 0;
int length = 0;
while (*pHexStringData)
{
sscanf(pHexStringData, "%02x", pData);
pHexStringData += 2;
pData++;
length++;
}
*dataLength = length;
}
请问这个函数的作用是什么？

[Eleven]

转换字符串到BYTE[]

[赵4老师]

CHAR h[]="A55a";
BYTE b[10];
int L;

ConvertHexStringToBytePtr(h,b,&L);
printf("L=%d,b[0]=0x%02x,b[1]=0x%02x\n",L,b[0],b[1]);//L=2,b[0]=0xa5,b[1]=0x5a