菜鸟问题请教

[leboc]

#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);
void fun(Student &);
fun(stud); //这里,不允许const类型的stud 转换成&stu;
return 0;
}
void const fun(Student &stu)
{
stu.display();
stu.change(101,80.5);
stu.display();
}


请问除了去掉const外,还有什么办法可以用fun?

[leboc]

#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);
void fun(Student &); //这里的申明改成void fun(const Student &);
fun(stud); //这里,不允许const类型的stud 转换成&stu;
return 0;
}
void const fun(Student &stu) //这里也改成void fun(const Student &stu);
{
stu.display();
stu.change(101,80.5);
stu.display();
}
就OK了.


我晕.每次都是刚提问,就想到答案了.

为什么分数不能给自己.....

[chlaws]

呵呵,自己解决了印象深些

[ysuliu]

解决了已经～～还是自己解决的，不错～

[boys2002]

楼主 冰雪聪明



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