Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.tutorialspoint.com/cpp_standard_library/cpp_list_insert_single_element.htm below:

C++ List Insert Element

The C++ function std::list::insert() extends iterator by inserting new element at position in list. This member function increases size of the list.

Following is the declaration for std::list::insert() function form std::list header.

iterator insert (iterator position, const value_type& val);

iterator insert (const_iterator position, const value_type& val);

• position − Position in the list where new element to be inserted.

• val − Value to be assigned to newly inserted element.

Returns a random access iterator which points to the newly inserted element.

If reallocation fails bad_alloc exception is thrown.

Linear i.e. O(n)

The following example shows the usage of std::list::insert() function.

#include <iostream>
#include <list>

using namespace std;

int main(void) {
   list<int> l;

   for (int i = 0; i < 5; ++i)
      l.insert(l.end(), i + 1);

   cout << "List contains following elements" << endl;

   for (auto it = l.begin(); it != l.end(); ++it)
      cout << *it << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

List contains following elements
1
2
3
4
5

list.htm

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4