Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.tutorialspoint.com/cpp_standard_library/cpp_array_cend.htm below:

C++ Array cend Function

The C++ std::array::cend() function is used to return a constant iterator pointing to the element following the last element of the array. This function is used when you need a read only iterator that cannot modify the elements it points to.

Following is the syntax for std::array::cend() function.

const_iterator cend() const noexcept;

It does not accepts any parameter.

This function returns a constant iterator pointing to the past-end element of the array.

This function never throws exception.

Constant i.e. O(1)

Let's look at the following example, where we are going to use the cend() function on the integers array.

#include <iostream>
#include <array>
using namespace std;
int main() {
   array < int, 8 > MyArray {1,2,3,4,5,6,7,8};
   array < int, 8 > ::const_iterator cit;
   for (cit = MyArray.cbegin(); cit != MyArray.cend(); ++cit)
      cout << * cit << " ";
   return 0;
}

Output of the above code is as follows −

1 2 3 4 5 6 7 8

Consider the following example, where we are going to modify the value and observing the output.

#include <iostream>
#include <array>
using namespace std;
int main(void) {
   array < int, 5 > arr = {10,20,30,40,50};
   auto it = arr.cend();
   * it = 5;
   return 0;
}

Following is the output of the above code −

main.cpp: In function 'int main()':
main.cpp:8:8: error: assignment of read-only location '* it'
    8 |    *it = 5;
      |    ~~~~^~~

array.htm

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4