C++第一次测试题.

c++考试助攻，class Part { public: Part( int x=0) ：val(x) { cout<<val; } ~ Part() { cout<<val; } private: int val ; } ; class Whole { public : Whole ( int x , int y , int z=0 ) : p2(x) ,p1(y) , val(z) { cout<<val ; } ~ Whole() { cout<<val ; } private : Part p1, p2 ; int val ; } ; void main() { Whole obj(1,2,3); }