C++_day3

Per、Stu的有参无参构造函数和析构函数

#include <iostream>using namespace std;
class Per
{
private:string name;int age;double *height;double *weight;
public:Per(){cout << "Per::无参构造函数" << endl;}Per(string name,int age,double height,double weight):name(name),age(age),height(new double(height)),weight(new double(weight)){cout << "Per::有参构造函数" << endl;}~Per(){cout << "Per::析构函数" << endl;}
};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,double 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;}
};
int main()
{Per p1;Per p2("orange",22,173.8,49.5);cout << "========================" << endl;Per *p=new Per;delete p;cout << "========================" << endl;Stu s1;Stu s2(100,"orange",22,173.8,49.5);cout << "========================" << endl;Stu *q=new Stu;delete q;cout << "========================" << endl;return 0;
}