Problem:

The following is an abstract class Converter that converts units.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 #include using namespace std; class Converter { protected: double ratio; virtual double convert(double src)=0; // src를 다른 단위로 변환한다. virtual string getSourceString()=0; // src 단위 명칭 virtual string getDestString()=0; // dest 단위 명칭 public: Converter(double ratio) { this->ratio = ratio; } void run(){ double src; cout << getSourceString() << "을 " << getDestString() << "로 바꿉니다. "; cout << getSourceString() << "을 입력하세요>> "; cin >> src; cout << "변환 결과 : " << convert(src) << getDestString() << endl; } };

Write a 달러를 원화로 환산하는 WonToDollar class that inherits from the Converter class. The main() function and execution result are as follows.
1 2 3 4 int main() { WonToDollar wd(1010); // 1달러에 1010원 wd.run(); }

Objective & Hints:

Creating a derived class that inherits from an abstract class.

Code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 #include using namespace std; class Converter { protected: double ratio; virtual double convert(double src)=0; // src를 다른 단위로 변환한다. virtual string getSourceString()=0; // src 단위 명칭 virtual string getDestString()=0; // dest 단위 명칭 public: Converter(double ratio) { this->ratio = ratio; } void run(){ double src; cout << getSourceString() << "을 " << getDestString() << "로 바꿉니다. "; cout << getSourceString() << "을 입력하세요>> "; cin >> src; cout << "변환 결과 : " << convert(src) << getDestString() << endl; } }; class WonToDollar : public Converter { // Converter class 상속 int won; public: WonToDollar(int won) : Converter(won) { this->won = won; } // 매개변수가 있는 Converter 생성자 호출 double convert(double src){ return src/won; } virtual string getSourceString(){ return "원"; } virtual string getDestString(){ return "달러"; } }; int main() { WonToDollar wd(1010); // 1달러에 1010원 wd.run(); }