第五周 程序阅读——const

#include <iostream>
#include <string>
using namespace std;
class Student
{
public:
    Student() {}
    Student( const string& nm, int sc = 0 ): name(nm), score(sc){}
    //（1）下面的const干神马？_____________
    void set_student( const string& nm, int sc = 0 )
    {
        name = nm;
        score = sc;
}

    //（2）下面的const分别干神马？___________
    const string& get_name() const
    {
        return name;
}

    int get_score() const
    {
        return score;
    }
private:
    string name;
    int score;
};

//（3）下面的const干神马？_____________
void output_student(const Student& student )
{
    cout << student.get_name() << "\t";
    cout << student.get_score() << endl;
}

int main()
{
    Student stu( "Wang", 85 );
    output_student( stu );
    return 0;
}

运行结果：