size() – size of array

In this program, an std::array object called myArray is declared and initialized with the values 1 through 9. The std::array container is defined by specifying the element type and the size of the array in angle brackets. In this case, the element type is int and the size is determined by the number of initializers provided.

The program then uses the size() member function of the std::array container to obtain the size of the myArray array, which is the number of elements it contains. The value is then printed to the console using the cout statement.

The using namespace std; statement at the beginning of the program allows the program to use names from the std namespace without explicitly qualifying them.

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

int main() {
    array<int, 9> myArray = {1, 2, 3, 4, 5, 6, 7, 8, 9};

    cout << "size of array is: " << myArray.size() << endl;

    return 0;
}

Output

size of array is: 9