#include <iostream>
#include <string>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Book {
string title;
int price;
int pages;
public :
Book(string title="", int price=0, int pages=0){
this->title=title;
this->price=price;
this->pages=pages;
}
void show(){
cout << title << " " << price << "원 " << pages << "페이지 " << endl;
}
string getTitle(){
return title;
}
void operator +=(int n);
void operator -=(int n);
};
void Book :: operator +=(int n){
price+=n;
}
void Book :: operator -=(int n){
price-=n;
}
int main(int argc, char** argv) {
Book a("청춘",20000,300);
Book b("미래",30000,500);
a+=500;
b-=500;
a.show();
b.show();
return 0;
}
#include <iostream>
#include <string>
using namespace std;
class Book {
string title;
int price;
int pages;
public :
Book(string title="", int price=0, int pages=0){
this->title=title;
this->price=price;
this->pages=pages;
}
void show(){
cout << title << " " << price << "원 " << pages << "페이지 " << endl;
}
string getTitle(){
return title;
}
friend bool operator == (Book b, int n);
friend bool operator == (Book b, string n);
friend bool operator == (Book b1, Book b2);
};
bool operator == (Book b, int n){
if(b.price==n) return true;
else return false;
}
bool operator == (Book b, string n){
if(b.title==n) return true;
else return false;
}
bool operator ==(Book b1, Book b2){
if(b1.title==b2.title && b1.price==b2.price && b1.pages==b2.pages){
return true;
}
else return false;
}
int main(int argc, char** argv) {
Book a("명품c++",30000,500);
Book b("고품c++",30000,500);
if(a==30000) cout << "정가 30000원" << endl;
if(a=="명품c++")cout << "명품 c++ 입니다." << endl;
if(a==b) cout << "두 책이 같은 책입니다."<< endl;
return 0;
}
#include <iostream>
#include <string>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Book {
string title;
int price;
int pages;
public :
Book(string title="", int price=0, int pages=0){
this->title=title;
this->price=price;
this->pages=pages;
}
void show(){
cout << title << " " << price << "원 " << pages << "페이지 " << endl;
}
string getTitle(){
return title;
}
bool operator !(){
if (price==0) return true;
else false;
}
};
int main(int argc, char** argv) {
Book book("벼룩시장",0,50);
if(!book ) cout <<"공짜다"<< endl;
return 0;
}
#include <iostream>
#include <string>
using namespace std;
class Book {
string title;
int price, pages;
public :
Book(string title="", int price=0, int pages=0) {
this->title = title; this->price = price; this->pages = pages;
}
void show() {
cout << title << ' ' << price << "원 " << pages << " 페이지" << endl;
}
string getTitle() { return title; }
friend bool operator < (string s, Book b);
};
bool operator < (string s, Book b) {
if( s < b.title ) return true;
else return false;
}
int main() {
Book a("청춘", 20000, 300);
string b;
cout << "책 이름을 입력하세요>>";
getline(cin, b);
if( b < a )
cout << a.getTitle() << "이 " << b << "보다 뒤에 있구나!" << endl;
}