English
- #include <iostream>
- using namespace std;
- class Student
- {public:
- Student(int n,float s):num(n),score(s){}
- void change(int n,float s) const {num=n;score=s;}
- void display() const {cout<<num<<" "<<score<<endl;}
- private:
- mutable int num;
- mutable float score;
- };
- int main()
- {const Student stud(101,78.5);
- stud.display();
- stud.change(101,80.5);
- stud.display();
- return 0;
- }
