下列程序的运行结果是______。 #include＜iostream.h＞ class Sample { int a; public: Sample(int aa=0){a=aa;} ～S

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问题下列程序的运行结果是______。
#include＜iostream.h＞
class Sample
{
   int a;
public:
   Sample(int aa=0){a=aa;}
   ～Sample( ){cout~＜＜"Sample="＜＜a＜＜’’;}
};
class Derived:public Sample
{
   int b;
public:
   Derived(int aa=0,int bb=0):Sample(aa)(b=bb;}
   ～Derived( ){cout＜＜"Derived="＜＜b＜＜";}
};
void main( )
{
   Derived d1(9);
}

选项

答案Derived=0 Sample=9

解析本题考察派生类和基类的构造函数，析构函数的执行顺序。

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本试题收录于：二级C题库NCRE全国计算机二级分类