include iostream using namespace std union value int integer double _d

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#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;
}