【c++程序】构造函数

#include<iostream>
#include<string>
using namespace std;
class Person{
	string name;
    bool gender;
    int age;
    Person *lover;
public:
	Person(const char *n="无名",bool g=true);
	void growup(int years);
    void show();
};
Person::Person(const char *n,bool g/*=true*/){
	name=n;
	gender=g;
	age=0;
	lover=NULL;
}
void Person::growup(int years){
	age+=years;
}
void Person::show(){
	cout<<"大家好，我是"<<(gender?"帅哥":"美女")<<name<<"，今年"<<age<<"岁。"<<endl;
}
int main(){
	Person a("芙蓉",false);
	Person b("永浩",true);
	Person c("二狗");
	Person d;
	Person e();
	a.growup(18);
	b.growup(20);
	a.show();
	b.show();
	c.growup(5);
	c.show();
	d.growup(25);
	d.show();
	e().show();
}
Person e()
{
	string name;
	bool gender;
	int age;
	cout<<"请输入姓名，性别和年龄";
	cin>>name>>gender>>age;
	Person input(name.c_str(),gender);//c_str()函数返回一个指向正规C字符串的指针, 内容与本string串相同.
	input.growup(age);
	return input;
}