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 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 km를 mile(마일)로 변환하는 KmToMile class that inherits from the Converter class. The main() function and execution result are as follows.
1 2 3 4 int main() { KmToMile toMile(1.609344); // 1마일은 1.609344 KM toMile.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 #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 KmToMile : public Converter { double mile; public: KmToMile(double mile) : Converter(mile) { this->mile = mile; } virtual double convert(double src){ return src/mile; } virtual string getSourceString(){ return "Km"; } virtual string getDestString() { return "Mile"; } }; int main() { KmToMile toMile(1.609344); // 1마일은 1.609344 KM toMile.run(); }