c++ 子类调用父类构造方法 调用父类方法 类声明与实现分离

Person.h

#pragma once
#include "stdafx.h"
#include<iostream>
class Person {
private:
    std::string name;
    int age;
public:
    void sayHello();
    Person(std::string name, int age);
};

Person.cpp

#include "stdafx.h"
#include<iostream>
#include "Person.h"
#include <string>
Person::Person(std::string name, int age)
{
    this->name = name;
    this->age = age;
}
void Person::sayHello() {
    std::cout << "hell my name is: " << this->name << std::endl;
}

Male.h

#pragma once
#include"Person.h"
#include<string>
class Male:Person {
private :
    std::string gender;
public:
    Male::Male(std::string gender, std::string name, int age) ;
    void sayHello();
};

Male.cpp

#include "stdafx.h"
#include"Male.h"
#include<iostream>
#include<string>

Male::Male(std::string gender, std::string name, int age) :Person(name, age)
{
    this->gender = gender;
}
void Male::sayHello(){
    Person::sayHello();
    std::cout << "hell my gender is: " << this->gender << std::endl;
}

 ConsoleApplication1.cpp

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <math.h>
#include <string>
#include "Person.h"
#include "Male.h"
int main()
{
    using namespace std;
    
    Person* person = new Person("martin", 18);
    person->sayHello();

    Male* male = new Male("male","wangdada", 26);
    male->sayHello();

    cin.get();
    return 0;
}

运行结果