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");

}