翻转句子中单词的顺序

void Reverse(char *pBegin, char *pEnd)
{
      if(pBegin == NULL || pEnd == NULL)
            return;
      while(pBegin < pEnd)
      {
            char temp = *pBegin;
            *pBegin = *pEnd;
            *pEnd = temp;
            pBegin ++, pEnd --;
      }
}

char* ReverseSentence(char *pData)
{
      if(pData == NULL)
            return NULL;

      char *pBegin = pData;
      char *pEnd = pData;

      while(*pEnd != ‘\0‘)
            pEnd ++;
      pEnd--;

      // Reverse the whole sentence
      Reverse(pBegin, pEnd);

      // Reverse every word in the sentence
      pBegin = pEnd = pData;
      while(*pBegin != ‘\0‘)
      {
            if(*pBegin == ‘ ‘)
            {
                  pBegin ++;
                  pEnd ++;
                  continue;
            }
            // A word is between with pBegin and pEnd, reverse it
            else if(*pEnd == ‘ ‘ || *pEnd == ‘\0‘)
            {
                  Reverse(pBegin, --pEnd);
                  pBegin = ++pEnd;
            }
            else
            {
                  pEnd ++;
            }
      }

      return pData;
}