list push_back() function in C++ STL
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 mandatory value. This refers to the element needed to be added to the list, list_name.
Return Value: The return type of this function is void and it does not returns any value.
Below program illustrates the list::push_back() function.
// CPP program to illustrate the// list::push_back() function#include <bits/stdc++.h>using namespace std; int main(){ // Initialization of list list<int> demo_list; // intital size of list cout << "Initial Size of the list: " << demo_list.size() << endl; // Adding elements to the list // using push_back function demo_list.push_back(10); demo_list.push_back(20); demo_list.push_back(30); // Size of list after adding // some elements 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
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