C++ Deque assign()

C++ Deque assign() function assigns new contents to the deque container and the size of the container is modified accordingly.

Syntax

void assign(InputIterator first, InputIterator last);
void assign(int n,value_type val); 

Parameter

(first,last): It defines the range between which the new elements to be inserted.

n: It defines the new size of the deque container.

val: New value to be inserted.

Return value

It does not return any value.

Example 1

Let's see a simple example

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

Output:

1 2 3 4

In this example, assign() assigns the content of first container to the second container.

Example 2

Let's see a simple example

#include <iostream>
#include<deque>
using namespace std;
int main()
{
  deque<int> deq;
  deque<int>::iterator itr;
  deq.assign(5,6);
  for(itr=deq.begin();itr!=deq.end();++itr)
  std::cout << *itr <<" ";
  return 0;
}

Output: