#include<iostream>
using namespace std;
class Fraction
{
public:
	Fraction(int top, int bottom) :_top(top), _bottom(bottom) 
	{
		_value = static_cast<double>(_top) / _bottom;//显式将int转换为double类型
	}
	int getTop() { return _top; }
	int getBottom() { return _bottom; }
	double getValue() { return _value; }

private:
	int _top;
	int _bottom;
	double _value;//保存分数值，避免每次使用时重新计算，以空间换时间
};

int main()
{
	Fraction f(7, 4);
	cout << f.getTop() << " " << f.getBottom() << " " << f.getValue() << endl;
	system("pause");
	return 0;
}