C++ List emplace_back()

C++ List emplace_back() inserts a new element at the end of the list and the size of the list is increased by one.

The following illustration shows how this function works:

Syntax

Parameter

val: New value to be inserted at the end of the list.

Return value

It does not return any value.

Example 1

Let's see a simple example

#include <iostream>
#include<list>
using namespace std;
int main()
{
  list<int> li={1,2,3,4};
  list<int>::iterator itr;
  li.emplace_back(5);
 for(itr=li.begin();itr!=li.end();++itr)
  cout<<*itr<<" ";
  return 0;
 }

Output:

1 2 3 4 5

In this example, emplace_back() function adds a new element i.e 5 at the end of the list.

Example 2

Let's see a simple example

#include <iostream>
#include <list>
using namespace std;
int main()
{
list<char> li={'C','+'};
list<char>::iterator itr;
for(itr=li.begin();itr!=li.end();++itr)
std::cout << *itr;
cout<<'\n';
li.emplace_back('+');
for(itr=li.begin();itr!=li.end();++itr)
std::cout << *itr;
 return 0;
} 

Output:

C+
C++

In this example, emplace_back() function adds a new character i.e '+' at the end of the list.

Next Topicemplace_front() Function

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C++ List Function