C++面向对象实践

实践如下：

class Person{

private:
    int age;
    char name[25];
    int hight;

public:
    Person(int age, int hight, char* name);
    int getAge();
    char* getName();
    int getHight(){
        return hight;
    }
};

#include "Person.h"


Person::Person(int age, int hight, char* name1){
    Person::age = age;
    Person::hight = hight;
    Person::name = name1;
}

int Person::getAge(){
    return age;
}

char* Person::getName(){
    return name;
}

#include <iostream>

#include "Person.h"

using namespace std;

int main(){

    cout << "面向对象实践：" << endl;


    cout << "end." << endl;

    return 0;
}

 第二版：

class Person{

private:
    int age;
    char name[25];
    int hight;

public:
    // 静态常量不允许修改
    const static int SVar = 100;
    const static int Default_Age = 30;
    const static int Default_Hight = 166;


    // static 作为默认参数
    Person(int age = Default_Age, int hight = Default_Hight){
        this->age = age;
        this->hight = hight;
    }
    Person(Person &p);
    Person(Person *p);
    ~Person();
    Person(int age, int hight, char name[25]);
    int getAge();
    char* getName();
    int getHight(){
        return this->hight;//(*this).hight;
    }
};

#include <iostream>
#include <string.h>

#include "Person.h"

Person::Person(int age, int hight, char name[25]){
    Person::age = age;
    Person::hight = hight;
    strcpy(Person::name, name);
}
Person::Person(Person &p){
    age = p.age;
    hight = p.hight;
}
Person::Person(Person *p){
    age = p->age;
    hight = p->hight;
}
Person::~Person(){
    //delete[] name;
    std::cout<<"...~
";
}
int Person::getAge(){
    return age;
}

char* Person::getName(){
    return name;
}

#include <iostream>

#include "Person.h"

using namespace std;

int main(){

    cout << "面向对象实践1：" << endl;

    Person p(1,1);

    cout << "age:" << p.getAge()<< endl;
    cout << "hight:" << p.getHight() << endl;

    char name[25] = "1212121212q";
    Person pp(22,22,name);
    Person *p1 = &pp;

    cout << "age1:" << p1->getAge()<< endl;
    cout << "hight1:" << p1->getHight() << endl;
    cout << "name1:" << p1->getName() << endl;

    Person p2(p);
    cout << "age2:" << p2.getAge()<< endl;
    cout << "hight2:" << p2.getHight() << endl;

    Person p3(p1);
    cout << "age3:" << p3.getAge()<< endl;
    cout << "hight3:" << p3.getHight() << endl;


//    Person p4(NULL,NULL);
//    cout << "age4:" << p4.getAge()<< endl;
//    cout << "hight4:" << p4.getHight() << endl;

    cout << "Person::SVar:" << Person::SVar << endl;

    cout << "end1." << endl;

    return 0;
}