练习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

#include <iostream>

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)){
        cout << "Per::有参构造函数" << endl;
    }
    ~Per(){
        cout << "Per::析构函数" << endl;
        delete height;
        delete weight;
    }
};
class Stu{
private:
    double score;
    Per p1;
public:
    Stu(){cout << "Stu::无参构造函数" << endl;}
    Stu(double score,string name,int age,float height,float weight):score(score),p1(name,age,height,weight){
        cout << "Stu::有参构造函数" << endl;
    }
    ~Stu(){
        cout << "Stu::析构函数" << endl;
    }

};
int main()
{
    Stu s1;
    Stu s2(99,"李白",66,188,166);
    return 0;
}

思维导图：