2024.1.26 C++&QT 作业

思维导图

练习题

1.设计一个Per类，类中包含私有成员:姓名、年龄、指针成员身高、体重，再设计一个Stu类，类中包含私有成员:成绩、Per类对象p1，设计这两个类的构造函数、析构函数和拷贝构造函数。

#include 

using namespace std;

class Per
{
private:
    string name;
    int age;
    float *height;
    float *weight;
public:
    Per(){cout << "Per无参构造函数" << endl;}
    Per(string name,int age,float height,float weight):name(name),age(age),height(new float(height)),weight(new float(weight))
    {
    }
    ~Per()
    {
        cout << "Per 回收height" << endl;
        cout << "Per 回收weight" << endl;
        delete(height);
        delete (weight);
        height=nullptr;
        weight=nullptr;
    }
    Per(const Per &other)
    {
        this->name=other.name;
        this->age=other.age;
        height=new float;
        weight=new float;
        *height=*(other.height);
        *weight=*(other.weight);
    }
    void show()
    {
        cout << "name: " << name << endl;
        cout << "age: " << age << endl;
        cout << "height: " << *height << endl;
        cout << "weight: " << *weight << endl;
        cout << "=========================================" << endl;
    }
};
class Stu
{
private:
    float score;
    Per p1;
public:
    Stu(){cout << "Stu无参构造函数" << endl;}
    Stu(float score,string name,int age,float height,float weight):score(score),p1(name,age,height,weight)
    {
    }
    Stu(const Stu &other)
    {
        this->score=other.score;
        this->p1=other.p1;
    }
    ~Stu()
    {
        cout << "Stu 回收" << endl;
    }
    void show()
    {
        cout << "score: " << score << endl;
        p1.show();
    }
};

int main()
{
    Stu student(66.6,"张三",18,175.5,105.5);
    student.show();
    Stu student1=student;
    student1.show();
    return 0;
}