71. 有如下程序：
#include <iostream>
using namespace std;
class Shape{
public:
Shape(){ cout<<"S";}
~Shape(){ cout<<"~S";}
};
class Circle:public Shape {
public:
Circle(){ cout<<"C";}
~Circle(){ cout<<"~C";}
};
int main(){
Circle bigCircle;
return 0;
}
运行后的输出结果是______。
