S1xe

#include<iostream>
using namespace std;
class Student
{
public:
    Student():num(),score(){}
    Student(int n,float s):num(n),score(s){}
    void change(int n,float s)
    {
        num = n;
        score = s;
    }
    void display()
    {
        cout << num << " " << score << endl;
    }
    void display()const
    {
        cout << num << " " << score << endl;
    }
private:
    int num;
    float score;
};

int main(int argc, char* argv[])
{
    const Student st(100, 78.5);
    st.display();
    Student *p = (Student*)(&st);
    p->change(1, 2);
    p->display();
    st.display();
    return 0;
}