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;
}
};
int main() {
value variable;
cout << "Enter value of variable (integer or double): ";
variable.init();
cout << "Value = " << variable.get();
}