array get() function in C++ STL
The array::get() is a built-in function in C++ STL which returns a reference to the i-th element of the array container.
Syntax:
get(array_name)
Parameters: The function accepts two mandatory parameters which are described below.
- i – position of an element in the array, with 0 as the position of the first element.
- arr_name – an array container.
Return Value: The function returns a reference to the element at the specified position in the array
Time complexity: O(1)
Below programs illustrate the above function:
Program 1:
// CPP program to demonstrate the // array::get() function #include <bits/stdc++.h> using namespace std; int main() { // array initialisation array<int, 3> arr = { 10, 20, 30 }; // function call cout << "arr[0] = " << get<0>(arr) << "\n"; cout << "arr[1] = " << get<1>(arr) << "\n"; cout << "arr[2] = " << get<2>(arr) << "\n"; return 0; } |
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Output:
arr[0] = 10 arr[1] = 20 arr[2] = 30
Program 2:
// CPP program to demonstrate the // array::get() function #include <bits/stdc++.h> using namespace std; int main() { // array initialisation array<char, 3> arr = { 'a', 'b', 'c' }; // function call cout << "arr[0] = " << get<0>(arr) << "\n"; cout << "arr[1] = " << get<1>(arr) << "\n"; cout << "arr[2] = " << get<2>(arr) << "\n"; return 0; } |
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Output:
arr[0] = a arr[1] = b arr[2] = c
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