C++ Vector push_back

This function adds a new element at the end of the vector.

Syntax

Consider a vector v and 'k' is the value. Syntax would be:

v.push_back(k)

Parameter

k : k is the value which is to be inserted at the end of the vector.

Return value

This function does not return any value.

The following illustration shows how push_back function works :

This illustration shows that push_back function inserts new element at the end.

Example

Let's see a simple example.

#include<iostream>
#include<vector>
using namespace std;
int main()
{
	vector<char> v;
	v.push_back('j');
	v.push_back('a');
	v.push_back('v');
	v.push_back('a');
	for(int i=0;i<v.size();i++)
	cout<<v[i];
	return 0;
}

Output:

In this example, push_back function inserts the new elements into the vector v.