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C++友元函式訪問類的私有成員

#include <iostream>
#include<cstring>
using namespace std ;


class Student{
private:
string  name;int age;int sore;
public:
Student(string name,int age,int sore)
{
this->name = name;
this->age = age;
this->sore = sore;
}
friend void Display(Student student);

} ; 


void Display(Student student)
{
cout<<student.name<<"\t"<<student.age<<"\t"<<student.sore<<endl;

}


int main(void)
{
Student a("TOM",13,96);

Display(a);

return 0;
}