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vector::cend() function with example in C++ STL

C++ STL vector::cend() function: Here, we are going to learn about the cend() function of vector header in C++ STL with example.
Submitted by IncludeHelp, on May 11, 2019

C++ vector::cend() function

vector::cend() is a library function of "vector" header, it can be used to get the last element of a vector. It returns a const iterator pointing to the past-the-end element of the vector.

It returns a const_iterator which is an iterator point to the constant content(vector), the const_itertator can be increased or decreased just like an iterator but it cannot be used to update/modify the vector content it points to.

Note:

  • To use vector, include <vector> header.
  • It does not point to the last element, thus to get the last element we can use vector::cend()-1.

Syntax of vector::cend() function

    vector::cend();

Parameter(s): none – It accepts nothing.

Return value: const_iterator – It returns a const iterator pointing to the past-the-end element of the vector.

Example:

    Input:
    vector<int> vector1{ 1, 2, 3, 4, 5 };

    Function call:
    vector<int>::const_iterator cit;
    cit = vector1.cend()-1;
    cout<<*cit;

    Output:
    5

C++ STL program to demonstrate example of vector::cend() function

//C++ STL program to demonstrate example of 
//vector::cend() function

#include <iostream>
#include <vector>
using namespace std;

int main()
{
    vector<int> v1;

    v1.push_back(10);
    v1.push_back(20);
    v1.push_back(30);
    v1.push_back(40);
    v1.push_back(50);

    //creating iterator
    vector<int>::const_iterator cit;
    cit = v1.cend()-1;
    cout << "last element is: " << *cit << endl;

    return 0;
}

Output

last element is: 50

Reference: C++ vector::cend()






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