c++多态

#include "stdafx.h"
#include <iostream>
#define _NRT_SECURITY_NO_WANING
using namespace std;
class IProgram
{
public:
virtual void getSal()=0;

};
class Program:IProgram
{
public:
Program(char *name,int sal)
{
this->sal = sal;
this->name = name;
}
protected:
char* name;
int sal;

public:

// 通过 IProgram 继承
virtual void  getSal() override
{
cout << "name:\t" << name << " sal:\t" << sal << endl;
}

};
class supperPrograma : public Program,public IProgram
{
public :
supperPrograma(char *name,int sal):Program(name,sal)
{

}

// 通过 IProgram 继承
virtual void getSal() override
{
Program(this->name, this->sal).getSal();
}

};
class midPrograma : public Program , public IProgram
{
public:
midPrograma(char *name, int sal) :Program(name, sal)
{

}

// 通过 IProgram 继承
virtual void getSal() override
{
Program(this->name, this->sal).getSal();
}

};
class changjing
{
public:
void dis(IProgram* p)
{
p->getSal();
}
};
void main()
{
changjing* c = new changjing();
c->dis(new supperPrograma ("张三",1000));

system("pause");

}