The list:push_back() function in C++ STL is used to add a new element to an existing list container. It takes the element to be added as a parameter and adds it to the list container.
Syntax
list_name.push_back(value)
Parameters
- This function accepts a single parameter which is a mandatory value. This refers to the elements needed to be added to the list, list_name.
Return Value
- The return type of this function is void and it does not return any value.
Example
The below program illustrates the list::push_back() function.
CPP
#include <bits/stdc++.h>
using namespace std;
int main()
{
list< int > demo_list;
cout << "Initial Size of the list: " << demo_list.size()
<< endl;
demo_list.push_back(10);
demo_list.push_back(20);
demo_list.push_back(30);
cout << "Size of list after adding three "
<< "elements: " << demo_list.size();
return 0;
}
|
Output
Initial Size of the list: 0
Size of list after adding three elements: 3
Time Complexity: O(1)
Auxiliary Space: O(1)
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Last Updated :
30 May, 2023
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