神奇的椅子，童鞋们觉得玄机在哪里呢？# Joke - 肚皮舞运动
c*e
1 楼
What is the output of the following code? Why?
#include
using namespace std;
class student {
public:
virtual void sleep() { cerr << "student sleep" << endl; }
};
class grad: public student {
public:
virtual void sleep() { cerr << "grad sleep" << endl; }
};
void exam(student& stu) {
stu.sleep();
}
void main() {
grad g;
exam(g);
}
#include
using namespace std;
class student {
public:
virtual void sleep() { cerr << "student sleep" << endl; }
};
class grad: public student {
public:
virtual void sleep() { cerr << "grad sleep" << endl; }
};
void exam(student& stu) {
stu.sleep();
}
void main() {
grad g;
exam(g);
}
