模板方法模式 C++实现

//
//  main.cpp
//  template_pattern
//
//  Created by apple on 2019/3/12.
//  Copyright © 2019年 apple. All rights reserved.
//

#include <iostream>
using namespace std;

class BaseDesigner
{
public:
    virtual void getA() = 0;
    virtual void getB() = 0;
    virtual void getC() = 0;
    void template_method() {getA(); getB(); getC();}
};

class Designer_A:public BaseDesigner
{
public:
    void getA(){}
    void getB(){cout<<"getB 已实现"<<endl;}
    void getC(){cout<<"getC 已实现"<<endl;}
};

int main(int argc, const char * argv[]) {
    BaseDesigner *designer;
    Designer_A designer_a;
    designer = &designer_a;
    designer->template_method();
    return 0;
}

getB 已实现
getC 已实现
Program ended with exit code: 0