填空题
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);
【参考答案】
Derived=0 Sample=9