210826

////////////////////#include <iostream>

////////////////////

////////////////////using namespace std;

////////////////////

////////////////////int main()

////////////////////{

//////////////////// cout << "Hello world!" << endl;

//////////////////// return 0;

////////////////////}

//////////////////#include <iostream>

//////////////////using namespace std;

//////////////////class Circle{

//////////////////int radius;

//////////////////public:

////////////////// Circle() {radius=1;}

////////////////// Circle(int r) {this->radius=r;}

////////////////// void sett(int radius) {this->radius=radius;}

////////////////// double getArea() {return 3.14*radius*radius;}

//////////////////};

//////////////////Circle getC()

//////////////////{

////////////////// Circle tmp(30);

////////////////// return tmp;

//////////////////}

//////////////////int main()

//////////////////{

////////////////// Circle c;

////////////////// cout << c.getArea() << endl;

//////////////////

////////////////// c=getC();

////////////////// cout << c.getArea() << endl;

//////////////////}

//////////////

////////////////#include <iostream>

////////////////using namespace std;

////////////////int main()

////////////////{

//////////////// cout << "i" << '\t'

////////////////

////////////////

////////////////

////////////////}

////////////////*/

////////////////

////////////////#include<stdio.h>

////////////////

////////////////int main() {

//////////////// char word[100];

////////////////

//////////////// scanf("%s", word);

//////////////// printf("%s", word);

////////////////}

////////////////

////////////////// char &find = 'S';

////////////////// &s[0] = 'S';

//////////////#include <iostream>

//////////////using namespace std;

//////////////int main()

//////////////{

////////////// cout << "i" << '\t' << "n" << '\t' << "refn" << endl;

////////////// int i =1;

////////////// int n=2;

////////////// int &refn = n;

////////////// n=4;

////////////// refn++;

////////////// cout << i << '\t' << n << '\t' << refn << endl;

//////////////

////////////// refn = i;

////////////// refn++;

////////////// cout << i << '\t' << n << '\t' <<refn << endl;

//////////////

////////////// int *p=&refn;

////////////// *p=20;

////////////// cout << i << '\t' << n << '\t' << refn << endl;

//////////////}

////////////#include <iostream>

////////////using namespace std;

////////////class C{

////////////int radius;

////////////public:

//////////// C() { radius = 1;}

//////////// C(int r) { radius = r;}

//////////// void sett(int r) { radius = r;}

//////////// double getArea() { return 3.14*radius*radius;}

////////////};

////////////int main()

////////////{

//////////// C c;

//////////// C &refc = c; //둘이 주소까지 같아짐.

//////////// refc.sett(10);

//////////// cout << refc.getArea() << " " << c.getArea();

////////////}

//////////#include <iostream>

//////////using namespace std;

//////////bool average(int a[],int size,int& avg)

//////////{

////////// if(size <=0)

////////// {

////////// return false;

////////// }

////////// int sum=0;

////////// for(int i=0;i<size;i++)

////////// {

////////// sum +=a[i];

////////// }

////////// avg = sum/size;

////////// return true;

//////////}

//////////int main()

//////////{

////////// int x[] = {0,1,2,3,4,5};

////////// int avg;

////////// if(average(x,6,avg)) cout << "평균은 " << avg << endl;

////////// else cout << "매개변수 오류 " << endl;

//////////

////////// if(average(x,-2,avg)) cout << "평균은 " << avg << endl;

////////// else cout << "매개변수 오류 " << endl;

//////////}

////////#include <iostream>

////////using namespace std;

////////class C{

////////private:

//////// int radius;

////////public:

//////// C();

//////// C(int r);

//////// ~C();

//////// double getA() {return 3.14*radius*radius;}

//////// int getR() {return radius;}

//////// void sett(int radius) {this->radius=radius;}

////////

////////};

////////C::C()

////////{

//////// radius = 1;

//////// cout << "생성자 실행 radius = " << radius << endl;

////////}

////////C::C(int r)

////////{

//////// this->radius = r;

//////// cout << "생성자 실행 radius = " << radius << endl;

////////}

////////C::~C()

////////{

//////// cout << "소멸자 실행 radius = " << radius << endl;

////////}

////////void increase(C &c)

////////{

//////// int r = c.getR();

//////// c.sett(r+1);

////////}

////////int main()

////////{

//////// C waffle(30);

//////// increase(waffle);

//////// cout << waffle.getA() << endl;

////////}

//////#include <iostream>

//////using namespace std;

//////class C{

//////int radius;

//////public:

////// C() {radius=1;}

////// C(int r) {this->radius=r;}

////// void sett(int r) {this->radius=r;}

////// double getA() {return 3.14*radius*radius;}

//////};

//////void read(C &donut1)

//////{

////// int r;

////// cout << "정수 값으로 반지름을 입력하세요>> ";

////// cin >> r;

////// donut1.sett(r);

//////}

//////int main()

//////{

////// C donut;

////// read(donut);

////// cout << "donut의 면적 = " << donut.getA() << endl;

//////}

//////

//////

//////#include <iostream>

//////using namespace std;

//////char& find(char s[],int index)

//////{

////// return s[index];

//////}

//////int main()

//////{

////// char name[] = "Mike";

////// cout << name << endl;

//////

////// find(name,0) = 'S';

////// cout << name << endl;

//////

////// char& ref = find(name,2);

////// ref='t';

////// cout << name << endl;

//////

//////}

////#include <iostream>

////using namespace std;

////class C{

////private:

//// int radius;

////public:

//// C(const C& c);

//// C() { radius = 1;}

//// C(int r) { this->radius = r;}

//// double getArea() {return 3.14*radius*radius;}

////};

////C::C(const C& c)

////{

//// radius=c.radius;

//// cout << "복사 생성자 실행 radius = " << radius << endl;

////

////}

////int main()

////{

//// C src(30);

//// C dest(src);

////

//// cout << "원본의 면적 = " << src.getArea() << endl;

//// cout << "사본의 면적 = " << dest.getArea() << endl;

////}

//#include <iostream>

//#include <cstring>

//using namespace std;

//class Person{

//char* name;

//int id;

//public:

// Person(int id,const char* name);

// ~Person();

// void changeName(const char *name);

// void show() {cout << id << ',' << name << endl;}

//};

//Person::Person(int id,const char* name)

//{

// this->id=id;

// int len = strlen(name);

// this->name = new char[len+1];

// strcpy(this->name,name);

//}

//Person::~Person()

//{

// if(name)

// delete [] name;

//}

//void Person::changeName(const char* name)

//{

// if(strlen(name)>strlen(this->name))

// return;

// strcpy(this->name,name);

//}

//int main()

//{

// Person father(1,"Kitea");

// Person daughter(father);

//

// cout << "daughter 객체 생성 직후 ---" << endl;

//

// father.show();

// daughter.show();

//

// daughter.changeName("Grace");

// cout << "daughter 이름을 Grace로 변경한 후 ---" << endl;

// father.show();

// daughter.show();

//

// return 0;

//}

#include <iostream>

#include <cstring>

using namespace std;

class Person

{

char* name;

int id;

public:

Person(int id,const char* name);

Person(const Person& person);

~Person();

void changeName(const char *name);

void show() { cout << id << ',' << name << endl;}

};

Person::Person(int id,const char* name)

{

this->id=id;

int len = strlen(name);

this->name = new char[len+1];

strcpy(this->name,name);

}

Person::Person(const Person& person)

{

this->id=person.id;

int len = strlen(person.name);

this->name = new char [len+1];

strcpy(this->name,person.name);

cout << "복시 생성자 실행. 원본 객체의 이름 " << this->name << endl;

}

Person::~Person()

{

if(name)

delete [ ] name;

}

void Person::changeName(const char* name)

{

if(strlen(name)>strlen(this->name))

return;

strcpy(this->name,name);

}

int main()

{

Person father(1,"Kitae");

Person daughter(father);

cout << "daughter 객체 생성 직후 " << endl;

father.show();

daughter.show();

daughter.changeName("Grace");

cout << "daughter 이름 변경 후 " << endl;

father.show();

daughter.show();

return 0;

}