我必须在班级人员和班级学生之间进行继承，然后使用多态指针 pIndividual 编写一个测试程序。该程序可以编译，但它没有为我列出 student1 统计信息。
这是我的代码：
#include <iostream>
#include <string>
using namespace std;
class Person
{
public:
string m_Name, m_Address, m_City, m_State;
int m_Zip, m_Phone_Number;
void virtual list_stats();
};
void Person::list_stats()
{
cout << "This is the function show_stats() that is in class Person to show person1's " << endl;
cout << "information:" << endl << endl;
cout << "Name: " << m_Name << endl << "Address: " << m_Address << endl << "City: " << m_City << endl;
cout << "State: " << m_State << endl << "Zip: " << m_Zip << endl << "Phone Number: " << m_Phone_Number << endl << endl;
}
class Student : public Person
{
public:
char m_Grade;
string m_Course;
float m_GPA;
void virtual list_stats();
Student(float GPA = 4.0);
};
Student::Student(float GPA)
{
m_GPA = GPA;
}
void Student::list_stats()
{
cout << "This is the function show_stats() that is in class Student to show student1's " << endl;
cout << "information by using pointer pIndividual:" << endl << endl;
cout << "Name: " << m_Name << endl << "Address: " << m_Address << endl << "City: " << m_City << endl;
cout << "State: " << m_State << endl << "Zip: " << m_Zip << endl << "Phone Number: " << m_Phone_Number << endl << endl;
}
int main()
{
Person person1;
person1.m_Name = "Sarah";
person1.m_Address = "ABC Blvd.";
person1.m_City = "Sunnytown";
person1.m_State = "FL";
person1.m_Zip = 34555;
person1.m_Phone_Number = 1234567;
person1.list_stats();
Student student1(4.0);
student1.m_Name = "Todd";
student1.m_Address = "123 Four Dr.";
student1.m_City = "Anytown";
student1.m_State = "TX";
student1.m_Zip = 12345;
student1.m_Phone_Number = 7654321;
student1.m_Grade = 'A';
student1.m_Course = "Programming";
Person* pIndividual = new Student;
pIndividual->list_stats();
system("PAUSE");
return EXIT_SUCCESS;
}