#include <iostream>
#include <vector>
 
using namespace std;
 
int main() {
    // Creating empty vector containing integers
    vector<int> array;
    // Creating vector containing 10 elements of type integer with default value for that type - 0
    vector<int> array2(10);
 
    cout << "Element 0 of array2 is: " << array2[0] << endl;
 
    // Creating vector containing 10 elements of type integer with value 23
    vector<int> array3(10, 23);
 
    cout << "Element 0 of array3 is: " << array3[0] << endl;
 
    // We can also achieve similar behaviour by setting value for existing variable
    array = vector<int>(10, 23);
    cout << "Element 0 of array is: " << array[0] << endl;
 
    // Checking size of the array
    cout << "Size of the array is: " << array.size() << endl;
 
    // Adding new element to the end of the array
    array.push_back(55);
    cout << "Last element of array is: " << array[array.size() - 1] << endl;
    cout << "Size of the array is: " << array.size() << endl;
 
    // Adding new element at the position 5 in the array
    array.insert(array.begin() + 5, 60);
    cout << "Element 5 of array is: " << array[5] << endl;
    cout << "Size of the array is: " << array.size() << endl;
 
    // Deleting last element in the array
    array.pop_back();
    cout << "Size of the array is: " << array.size() << endl;
 
    // Deleting element at the position 5
    array.erase(array.begin() + 5);
    cout << "Element 5 of array is: " << array[5] << endl;
    cout << "Size of the array is: " << array.size() << endl;
 
    // Deleting elements in the array from index 5 to 7, not including 7
    array.erase(array.begin() + 5, array.begin() + 7);
    cout << "Size of the array is: " << array.size() << endl;
 
    // Resizing array to size 20, filling new elements with default value
    array.resize(20);
    cout << "Element 19 of the array is: " << array[19] << endl;
    cout << "Size of the array is: " << array.size() << endl;
 
    // Resizing array to size 30, filling new elements with the value 41
    array.resize(30, 41);
    cout << "Element 29 of the array is: " << array[29] << endl;
    cout << "Size of the array is: " << array.size() << endl;
 
    // Checking if the array is empty
    if(array.empty()) {
        cout << "Array is empty" << endl;
    } else {
        cout << "Array is not empty" << endl;
    }
 
    cout << "Content of the array: ";
    // Printing content of the array
    for(auto el: array) {
        cout << el << " ";
    }
 
    cout << endl;
 
    // Clearing array removing all of its content
    array.clear();
    cout << "Size of the array is: " << array.size() << endl;
 
    return 0;
}

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