![](https://lstatic.shangxueba.com/jiandati/pc/images/pc_jdt_tittleico.png)
有如下程序: #jnClude<iostream> using namespaCe std; Class Part{ publiC: Part(int x
有如下程序: #jnClude<iostream> using namespaCe std; Class Part{ publiC: Part(int x=0):val(X){Cout<<val;} ~Part{Cout<<val;} private: int val; t }; Class Whole{ publiC: Whole(int x,int Y,int z=0):p2(x),pl(y),val(z){Cout<<val;} ~Whole{eout<<val;} private: Part pl,p2; int val; }; int main { Whole obj(1,2,3); return 0; } 执行这个程序的输出结果是()。
A.123321
B.213312
C.213
D.123123
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)