C++ Usage and example of List size()

C++ List (List)

C ++ The List size() function finds the number of existing elements in the list. This function does not modify the content of the deque.

Syntax

int size();

Parameter

It does not contain any parameters.

Return Value

It returns the number of elements in the list.

Example

Let's see a simple example

Example

#include <iostream>
#include<list>
using namespace std;
int main()
{
　　　　list<int> li={1,2,3};
　　　　std::cout << "The size of the list is: " << li.size() << std::endl;
　　　　return 0;
{}

Output:

The size of the list is:　3

In this example, the size() function returns the size of the list, that is3.

C++ List (List)