C++解析特殊符号tab和换行符号详情

    int i, j ;
    i = 0;
    j = strlen(strIn) - 1;
    while(strIn[i] == ' ' || strIn[i] == '\t')
            ++i;

    while(strIn[j] == ' ' || strIn[j] == '\t')
            --j;
    strncpy(strOut, strIn + i , j - i + 1);

vector<string> Parse_Wifi_List(string& msg)
{
        vector<string> words;
        if(msg.empty())
            return words;
        string::iterator temp_p = msg.begin();
        string sepword;
        bool bit_true = false;
        while(temp_p != msg.end())
        {
            if(/* * temp_p == ' ' || */  * temp_p == '\t' || * temp_p == '\n')
            {
                if(bit_true)
                {
                    words.push_back(sepword);
                    PP_INFO("seword :%s",sepword.c_str());
                    sepword.clear();
                }   
                bit_true = false;
                temp_p++;
                continue;
            }
            else
            {
                bit_true = true;
                sepword += *temp_p;
            }
            if(*temp_p ++ == '\0')
            {
                break;
            }
            // else
            // {
            //  PP_INFO("%d %d %c",msg.end(),*temp_p,*temp_p);
            // }
        }
        // for(auto point : words)
        // {
        //  printf(".%s\n",point.c_str());
        // }
      //for(uint16_t i =0;i<words.size();i+=5)
      //{
        // printf("[]%s,%s\n",words[i].c_str(),words[i+1].c_str(),words[i+3].c_str());
        //}
        return words;
    }