[완료]c++ STL에 관한 질문입니다.

#include <vector>
#include <string>
#include <iostream>
 
using namespace std;
 
struct tdata {
	vector<string> items;
};
 
int _tmain(int argc, _TCHAR* argv[])
{
	vector<struct tdata> t;
	vector<struct tdata>::iterator tIter;
 
 
	struct tdata data;
 
 
	for (int i =0 ; i < 10 ; ++i ) {
		for (int j =0 ; j < i ; ++j ) {
			data.items.push_back(",");
		}
		t.push_back(data);
	}
 
	for (tIter = t.begin(); tIter != t.end(); ++tIter ) {
		vector<string> items= (*tIter).items;
		vector<string>::iterator itemIter;
		for (itemIter = items.begin() ;itemIter != items.end(); ++itemIter ){
			cout<<*itemIter;
		}
		cout<<endl;
 
	}
 
	t[5].items[4] = "11111111111";
 
	for (tIter = t.begin(); tIter != t.end(); ++tIter ) {
		vector<string> items= (*tIter).items;
		vector<string>::iterator itemIter;
		for (itemIter = items.begin() ;itemIter != items.end(); ++itemIter ){
			cout<<*itemIter;
		}
		cout<<endl;
 
	}
	return 0;
}