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2023/12/30 c++ work

news 2025/8/25 14:14:32

定义一个Person类，私有成员int age，string &name，定义一个Stu类，包含私有成员double *score，写出两个类的构造函数、析构函数、拷贝构造和拷贝赋值函数，完成对Person的运算符重载(算术运算符、条件运算符、逻辑运算符、自增自减运算符、插入/提取运算符)

#include <iostream>using namespace std;// 2.定义一个Person类，私有成员int age，string &name，定义一个Stu类，包含私有成员double *score，
// 写出两个类的构造函数、析构函数、拷贝构造和拷贝赋值函数，完成对Person的运算符重载(算术运算符、
// 条件运算符、逻辑运算符、自增自减运算符、插入/提取运算符)class Person{int age;string &name;
public:Person(string &name):age(0),name(name){}Person(int age,string &name):age(age),name(name){}//拷贝构造函数Person(const Person &other):age(other.age),name(other.name){cout << "person 拷贝构造函数" << endl;}//拷贝赋值函数Person &operator=(const Person &other){this->age = other.age;this->name = other.name;cout << "person 拷贝赋值函数" << endl;return *this;}//算术运算符friend Person operator+(Person &c1,Person &c2);//条件运算符friend bool operator==(Person &c1,Person &c2);//逻辑运算符friend bool operator&&(Person &c1,Person &c2);//自增自减运算符(后自加)Person operator++(int);//插入/提取运算符friend ostream &operator<<(ostream &out,Person &c1);void show();
};void Person::show(){cout << "person age = " << age << endl;cout << "person name = " << name << endl;
}ostream &operator<<(ostream &out,Person &c1){out << "age = " << c1.age << " name = " << c1.name;return out;
}Person Person::operator++(int){string str ="";Person temp(str);temp.age = this->age++;return temp;
}Person operator+(Person &c1,Person &c2){string str ="";Person temp(str);temp.age = c1.age + c2.age;return temp;
}bool operator==(Person &c1,Person &c2){return c1.age == c2.age;
}class Stu{double *score;
public://构造函数Stu(double score):score(new double(score)){}//析构函数~Stu(){delete score;}//拷贝构造函数Stu(const Stu &other):score(other.score){cout << "stu 拷贝构造函数" << endl;}//拷贝赋值函数Stu &operator=(const Stu &other){*(this->score) = *(other.score);cout << "stu 拷贝构造函数" << endl;return *this;}
};int main()
{string name ="张三";Person per(20,name);//调用构造函数Person per2 = per;per2.show();cout <<"-----------------------------------------------------" << endl;string name1 ="ww";Person per3(name1);//调用构造函数per3 = per2;per3.show();cout <<"-----------------------------------------------------" << endl;Person per4 = per2+per3;per4.show();bool res = per2 == per3;cout << "per2 == per3 结果 = " << res << endl;cout <<"-----------------------------------------------------" << endl;cout << per << endl;return 0;
}

2. 思维导图