C++ day4

目录

思维导图

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)

思维导图

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;
class Person
{int age;string &name;
public:Person(int age,string &name):age(age),name(name){cout << "Person的构造函数" << endl;}~Person(){cout << "Person的析构函数"<< endl;}Person(const Person &other):age(other.age),name(other.name){cout << "Person的拷贝构造函数" << endl;}Person &operator=(const Person &other){this->age=other.age;this->name=other.name;cout << "Person的拷贝赋值函数" << endl;return *this;}Person operator+(Person &other);Person operator-(Person &other);Person operator*(Person &other);Person operator/(Person &other);friend Person operator%(Person &c1,Person &c2);friend bool operator>(Person &c1,Person &c2);friend bool operator<(Person &c1,Person &c2);friend bool operator==(Person &c1,Person &c2);friend bool operator>=(Person &c1,Person &c2);friend bool operator<=(Person &c1,Person &c2);friend bool operator!=(Person &c1,Person &c2);friend bool operator&&(Person &c1,Person &c2);friend bool operator||(Person &c1,Person &c2);void operator()();friend Person operator++(Person &c1);friend Person operator--(Person &c1);Person operator++(int);Person operator--(int);friend ostream &operator<<(ostream &out,Person &c1);friend istream &operator>>(istream &out,Person &c1);
};
string n="";
Person temp(0,n);
//+运算符重载
Person Person::operator+(Person &other)
{temp.age = this->age+other.age;temp.name=this->name;return temp;
}
//-运算符重载
Person Person::operator-(Person &other)
{temp.age = this->age-other.age;temp.name=this->name;return temp;
}
//*运算符重载
Person Person::operator*(Person &other)
{temp.age = this->age*other.age;temp.name=this->name;return temp;
}
//  /运算符重载
Person Person::operator/(Person &other)
{temp.age = this->age/other.age;temp.name=this->name;return temp;
}
//%运算符重载
Person operator%(Person &c1,Person &c2)
{temp.age=c1.age%c2.age;temp.name=c1.name;return temp;
}
//>运算符重载
bool operator>(Person &c1,Person &c2)
{return c1.age>c2.age;
}
//<运算符重载
bool operator<(Person &c1,Person &c2)
{return c1.age<c2.age;
}
//==运算符重载
bool operator==(Person &c1,Person &c2)
{return c1.age==c2.age;
}
//>=运算符重载
bool operator>=(Person &c1,Person &c2)
{return c1.age>=c2.age;
}
//<=运算符重载
bool operator<=(Person &c1,Person &c2)
{return c1.age<=c2.age;
}
//!=运算符重载
bool operator!=(Person &c1,Person &c2)
{return c1.age!=c2.age;
}
//&&运算符重载
bool operator&&(Person &c1,Person &c2)
{return c1.age&&c2.age;
}
//||运算符重载
bool operator||(Person &c1,Person &c2)
{return c1.age||c2.age;
}
//()运算符重载
void Person::operator()()
{cout << "hello" << endl;
}
//前自增
Person operator++(Person &c1)
{++(c1.age);return c1;
}
//前自减
Person operator--(Person &c1)
{--(c1.age);return c1;
}
//后自增
Person Person::operator++(int)
{temp.age=this->age++;temp.name=this->name;return temp;
}
//后自减
Person Person::operator--(int)
{temp.age=this->age--;temp.name=this->name;return temp;
}
//cout运算符重载
ostream &operator<<(ostream &out,Person &c1)
{out << c1.age << " " << c1.name;return out;
}
//cin运算符重载
istream &operator>>(istream &in,Person &c1)
{in >> c1.age;in >> c1.name;return in;
}class Stu
{double *score;
public:Stu(double score):score(new double(score)){cout << "Stu的构造函数" << endl;}~Stu(){delete score;cout << "Stu的析构函数"<< endl;}Stu(const Stu &other):score(new double(*(other.score))){cout << "Stu的拷贝构造函数" << endl;}Stu &operator=(const Stu &other){*(this->score)=*(other.score);cout << "Stu的拷贝赋值函数" << endl;return *this;}
};
int main()
{string name="zhangsan";Person s1(12,name);return 0;
}