题解 | #浅拷贝和深拷贝#

#include <iostream>
#include <cstring>
#pragma warning(disable : 4996)
using namespace std;

class Person {

    public:
        char* name; // 姓名
        int age;    // 年龄

        Person(const char* name, int age) {
            this->name = new char[strlen(name) + 1];
            strcpy(this->name, name);
            this->age = age;
        }

        // write your code here......
        Person(const Person &p):age(p.age){//拷贝构造必须传引用，深拷贝字符串要用下面的方式
            this->name=new char[strlen(name)+1];//利用new开辟一个动态空间，用name指针接收
       //注意复制相等空间后要+1,这里的+1是给字符串末尾的“\0”留出空间
            strcpy(this->name,p.name);//函数传参
        }

        void showPerson() {
            cout << name << " " << age << endl;
        }

        ~Person() {
            if (name != nullptr) {
                delete[] name;//数组类型释放内存在指针前加[]
                name = nullptr;//指针置空
            }
        }

};

int main() {

    char name[100] = { 0 };
    int age;

    cin >> name;
    cin >> age;

    Person p1(name, age);
    Person p2 = p1;

    p2.showPerson();

    return 0;
}