iterator를 반환하는 함수가 가능할까요?

#include <iostream>
using namespace std;
#include <list>
#include <string>
struct Books {
	string title;
	string author;
	string publisher;
	string publishingDate;
	int index;//책 등록번호
	Books(string title, string author, string publisher, string publishingDate, int index) {
		this->title=title;
		this->author=author;
		this->publisher=publisher;
		this->publishingDate=publishingDate;
		this->index=index;
	}
};
 
list<Books>::iterator output_list_data(list<Books>::iterator first, list<Books>::iterator nexttolast) {
	list<Books>::iterator pos;
	for(	pos=first;pos!=nexttolast;++pos) {
		cout<<"==============================================="<<endl;
		cout<<"title is "<<pos->title<<endl;
		cout<<"author is "<<pos->author<<endl;
		cout<<"publisher is "<<pos->publisher<<endl;
		cout<<"publishingDate is "<<pos->publishingDate<<endl;
		cout<<"index is "<<pos->index<<endl;
		cout<<"==============================================="<<endl;
	}
	list<Books>::iterator* replacing_pos=new list<Books>::iterator;
	(*replacing_pos)=nexttolast;
	//cout<<"in output_list_data, "<<(--pos)->index;
        //cout<<(--(*replacing_pos))->index;
	//cout<<(--nexttolast)->index<<endl;//test
	//return replacing_pos;
	return pos;
}
 
int main() {
	list<Books> ProgLibrary;
 
	//push_back()
	ProgLibrary.push_back(Books(string("The forgotten time"),string("Dikkins Chars"),string("Dream Co"),string("2011.11.5"),3));
	ProgLibrary.push_back(Books("The wind blows suddenly","Verboss Jack","Doctor Duck","2012.5.8",4));
	ProgLibrary.push_back(Books("The computers has existed","Computer Man","About Computer","2009.5.9",5));
	ProgLibrary.push_back(Books("The river has flowed forever","Tobbin Who","History River","20013.8.23",6));
 
	//push_front()
	ProgLibrary.push_front(Books("The head refuses the body","Why Huston","Really Doctor","2009.4.7",2));
	ProgLibrary.push_front(Books("The wings can't be used for step","Eagle Man","Animal Nest","2005.8.19",1));
 
	//iterator
	for(list<Books>::iterator pos1=ProgLibrary.begin();pos1!=ProgLibrary.end();++pos1) {
		cout<<"==============================================="<<endl;
		cout<<"title is "<<pos1->title<<endl;
		cout<<"author is "<<pos1->author<<endl;
		cout<<"publisher is "<<pos1->publisher<<endl;
		cout<<"publishingDate is "<<pos1->publishingDate<<endl;
		cout<<"index is "<<pos1->index<<endl;
		cout<<"==============================================="<<endl;
	}
 
	//pop_back()
	cout<<"pop_back testing"<<endl;
	ProgLibrary.pop_back();
	list<Books>::iterator confirm=output_list_data(ProgLibrary.begin(),ProgLibrary.end());
	//--confirm;
	cout<<(confirm)->index<<(confirm)->title<<endl;
	//delete confirm;
	/*if(confirm->index!=6) {
		cout<<"The pop_back() is success."<<endl;
	}
	else {
		cout<<"The pop_back() has failed."<<endl;
	}*/
 
	return 0;
}