有如下程序：
# include ＜ioslreclm＞
Using namespace std;
class Base{
public:
Base(int x=0):valB(x){cout＜＜valB;}
～Base(){cout＜＜valB;}
Private:
int valB;
};
class, Derived: public Base{
public:
Dcrived(int x=0,int y=0):Base(x),valD(y)
{cout＜＜valD;}
～Derived(){cout＜＜valD;}
private:
int valD;
};
int main(){
Derived obj12(2,3);
return 0;
}
运行时的输出结果是 ____ ，