单选题

分析一下程序的运行结果: class CBase { public: CBase(){cout<<”constructing CBase class”<<ENDL} ~CBa

Question

分析一下程序的运行结果:
class CBase
{
public:
    CBase(){cout<<”constructing CBase class”<<ENDL}
    ~CBase(){cout<<”destructing CBase class”<<ENDL}
}

class CSub : public CBase
{
public:
    CSub(){cout<<”constructing CSub class”&l

A. constructing CSub class constructing CBase class destructing CSub class destructing CBase class

B. constructing CBase class constructing CSub class destructing CBase class destructing CSub class

C. constructing CBase class constructing CSub class destructing CSub class destructing CBase class

D. constructing CSub class constructing CBase class destructing CBase class destructing CSub class