修改代码,该怎么解决

修改代码
#include<iostream>
#include<fstream>
#include<vector>
#include<string>

using namespace std;


struct PART
{

  string id;
  string seq;
  vector<string> andl;
};

struct PART info;

struct HEAD
{

  vector<PART> Info;
};

struct HEAD head;

int main()
{

  string str, src;

  string filename = "456.txt";

// string filename = "openroad.txt";


  ifstream infile(filename.c_str());


  while(getline(infile,str))

  {

  string::size_type m = str.find('\t');

  src = str.substr(0,m);

  if( src == "@part")


  head.Info.push_back(info);



  if( src == "@l" )
  {

  info.andl.push_back(str.substr(m));

  }

  if( src == "@seq" )

  {

  info.seq = str.substr(m);

  }

  if( src == "@id" )

  {
  info.id = str.substr(m);

  }

  }


  for(vector<PART>::iterator it = head.Info.begin()+1; it != head.Info.end(); ++it)
  {

  cout<<"@part"<<endl;
  cout<<"@id"<<it->id<<endl;
  cout<<"@seq"<<it->seq<<endl;

  for(vector<string>::iterator is = (*it).andl.begin(); is != (*it).andl.end(); ++is )

  cout<<"@l"<<*is<<endl;

  cout<<endl;

  }




  return 0;

}

这个输出的是
@part
@id 2
@seq 17
@l 553720 5434138 6378397 1

@part
@id 2
@seq 18
@l 553720 5434138 6378397 1
@l 553720 17567680 17567697 1
@l 553730 17567674 17567686 1
@l 553720 17567697 17567674 1

@part
@id 2
@seq 19
@l 553720 5434138 6378397 1
@l 553720 17567680 17567697 1
@l 553730 17567674 17567686 1
@l 553720 17567697 17567674 1
@l 553730 17567686 17567672 1

@part
@id 2
@seq 20
@l 553720 5434138 6378397 1
@l 553720 17567680 17567697 1
@l 553730 17567674 17567686 1
@l 553720 17567697 17567674 1
@l 553730 17567686 17567672 1
@l 553627 17567696 16591773 1
@l 553627 17567667 17567696 1


我要的是这种
@part
@id 2
@seq 17
@l 553720 5434138 6378397 1

@part
@id 2
@seq 18
@l 553720 17567680 17567697 1
@l 553730 17567674 17567686 1
@l 553720 17567697 17567674 1

@part
@id 2
@seq 19
@l 553730 17567686 17567672 1

@part
@id 2
@seq 20
@l 553627 17567696 16591773 1
@l 553627 17567667 17567696 1

帮我改一下 怎么输出这个

[解决办法]

C/C++ code

struct PART{    string id;    string seq;    vector<string> andl;    int nCount;//加个计数的};    while(getline(infile,str))//读取的代码改下    {        string::size_type m = str.find('\t');        src = str.substr(0,m);        if( src == "@part")        {            head.Info.push_back(info);        }