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array::back() function with Example in C++ STL

C++ STL | array::back() function: Here, we are going to learn about the back() function of Array in C++ STL.
Submitted by IncludeHelp, on February 28, 2019

C++ STL array::back() function

back() function is a library function of array and it is used to get the last element of an array, it returns the reference to the last element in an array.

Syntax

array_name.back();

Parameter(s)

None

Return value

It returns a reference to the last element of array_name.

Sample Input and Output

Input or array declaration:
array<int,5> values {10, 20, 30, 40, 50};

Function call:
values.back();

Output:
50

Example

C++ STL program to get the last element of an array using array:back() −

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

int main() {
  array<int, 5> values{10, 20, 30, 40, 50};

  // printing first element
  cout << "Last element is: " << values.back() << endl;

  return 0;
}

Output

Last element is: 50