class版本（没救了）

#include <bits/stdc++.h>
using namespace std;
class MyClass {
		int MyVar = 0;
	public:
		void MyVarPush(signed Number) {
			MyVar = Number;
			return;
		}
		~MyClass() {
			MyVar = 0;
		}
		signed MyVarNumber() {
			return MyVar;
		}
};
int main() {
	MyClass a;
	signed Num;
	cin >> Num;
	a.MyVarPush(Num);
	cout << a.MyVarNumber();
	return 0;
}

我是不是没救了