include iostream using namespace std union value int integer double _d

#include <iostream>

using namespace std;

union value {
    int integer;
    double _double;
    void init() {
        cin >> _double;
        if ((int) _double == _double) {
            integer = (int) _double;
        }
    }

    double get() {
        if (_double != NULL){
            return _double;
        }
        return integer;
    }

    void unset() {
        integer = NULL;
        _double = NULL;
    }

};

int main() {

    size_t number;

    cout << "Enter the dimension of the array of numbers: " << endl;

    cin >> number;

    value *arr = new value[number];

    for (int i = 0; i < number; ++i) {
        cout << "Enter the value for array[" << i << "]" << endl;
        arr[i].init();
    }

    cout << "Entered array:" << endl;

    for (int i = 0; i < number; ++i) {
        cout << "array[" << i << "] = " <<  arr[i].get() << endl;
    }

    value query;



    cout << "Enter what number do you want delete?." << endl;
    query.init();

    for (int i = 0; i < number; i++) {
        if (query.get() == arr[i].get()) {
            cout << "Number with value = " << query.get() << " has been removed." << endl;
            arr[i].unset();
        }
    }

    cout << "Changed array:" << endl;

    for (int i = 0; i < number; ++i) {
        if(arr[i].get() != NULL) {
            cout << "array[" << i << "] = " << arr[i].get() << endl;
        }
    }

    return 0;
}