C++：day3

思维导图

练习题

#include <iostream>
using namespace std;

class Per
{
private:
    string name;
    int age;
    int *height;
    double weight;

public:
    Per()
    {
        cout << "Per::无参构造函数" << endl;
    }
    Per(string name, int age, int height, double weight) : name(name), age(age), height(new int(height)), weight(weight)
    {
        cout << "Per::有参构造函数" << endl;
    }
    ~Per()
    {
        cout << "Per::析构函数" << endl;
        delete height;
        height = nullptr;
    }
};

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, int height, double 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;
    }
    void show()
    {
        cout << score << endl;
    }
};
int main(int argc, char const *argv[])
{
    Stu p(98, "葛飞飞", 23, 179, 86);
    p.show();
    return 0;
}