array::cbegin() and array::cend() in C++ STL

Last Updated : 30 Oct, 2019

array::cbegin() is a built-in function in C++ STL which returns a const_iterator pointing to the first element in the array. It cannot be used to modify the element in the array which is possible using array::begin().

Syntax:

array_name.cbegin()

Parameters: The function does not accept any parameters.

Return Value: The function returns a const_iterator pointing to the first element in the array.

Program 1:

// CPP program to illustrate 
// the array::cbegin() function 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    array<int, 5> arr = { 1, 5, 2, 4, 7 }; 
  
    // Prints the first element 
    cout << "The first element is " << *(arr.cbegin()) << "\n"; 
  
    // Print all the elements 
    cout << "The array elements are: "; 
    for (auto it = arr.cbegin(); it != arr.cend(); it++) 
        cout << *it << " "; 
    return 0; 
} 

Output:

The first element is 1
The array elements are: 1 5 2 4 7

array::cend() is a built-in function in C++ STL which returns a const_iterator pointing to the theoretical element after the last element in an array.

Syntax:

array_name.cend()

Parameters: The function does not accept any parameters.

Return Value: The function returns a const_iterator pointing to the theoretical element after the last element in an array.

Program 1:

// CPP program to illustrate 
// the array::cend() function 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    array<int, 5> arr = { 1, 5, 2, 4, 7 }; 
  
    // prints all the elements 
    cout << "The array elements are: "; 
    for (auto it = arr.cbegin(); it != arr.cend(); it++) 
        cout << *it << " "; 
    return 0; 
} 