RationalNumber.cpp

#ifndef RationalNumberClass
#define RationalNumberClass
 
#include <stdexcept>
 
class RationalNumber
{
	int num[2];
 
	RationalNumber()
	{
		num[0] = num[1] = 0;
	}
 
public:
 
	void SetNumber(int iP, int iQ)
	{
		if(iQ == 0) throw std::invalid_argument("Denominator can't be zero.");
		if(iQ < 0) throw std::invalid_argument("Denominator can't be negative.");
		num[0] = iP;
		num[1] = iQ;
	}
 
	double GetDoubleValue()
	{
		return ((double) num[0]) / ((double) num[1]);
	}
}
 
#endif