C++ List resize()

C++ List resize() function changes the size of the list container.

Following are the conditions:

If n is smaller than the current container size then the list container is reduced to n elements, removing all the elements that extends the n space.

If n is greater than the current container size then the size of the container is increased and more elements can be inserted in the expanded space.

Syntax

Parameter

n: It is a new container size.

<val: It is a value which is to be inserted in a newly constructed space.

Return value

It does not return any value.

Example 1

Let's see a simple example when n is less than the current container size.

Output:

Content of list li :
1,2,3,4,5
Content of list li :
1,2,3

In this example, resize() function decreases the size of the list container by 2. Therefore, the last two elements of the list has been removed and output becomes 1,2,3.

Example 2

Let's see a simple example when n is greater than the current container size.

Output:

Content of list li :
10,20,30,40
After resizing,Content of list li :
10,20,30,40,50,50,50

In this example, resize() function increases the size of the list by 3 and the new element i.e 50 is inserted in a newly constructed space.