How to declare a list in another list???

Ex: I declare a function in class List:

Code:

void Copy(List<List<Entry>> &des,List<Entry> source);

In using function:

Code:

List<int> list1;
list1.insert(position1,item1);
list1.insert(position2,item2);
list1.insert(position3,item3);
List<List<int>> listtemp;
list2.copy(listtemp,list1);

I want to declare a list that their entries are a list( type of integer)...
How to declare it...when i use above declaration..compiler informs that: missing ',' before listtemp..Why?? please help me....Thanks very much....

>List<List<int>> listtemp;

Code:

List<List<int> > listtemp;

It's subtle, but notice the space between the two >'s. C++'s parsing grammar recognizes >> as the bitwise right shift operator, not two adjacent closing delimiters for nested template argument lists. You disambiguate it by separating them with whitespace.