rational.h

一个有理数可以表示成分子与分母都是整数的一个分数。定义一个表示有理数的类Rational（包括方法的实现）

// Rational.h: interface for the Rational class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_RATIONAL_H__86C32594_F543_435F_B747_A69A9F600959__INCLUDED_)
#define AFX_RATIONAL_H__86C32594_F543_435F_B747_A69A9F600959__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class Rational 
{
private:
	int CommonDivsor(int num1, int num2);
	int nNumerator;
	int nDenominator;
	char str[25];
public:
	char* value();
	void Simplify();
	Rational(Rational &rNum);
	Rational operator*(Rational rNum);
	Rational operator+(Rational rNum);
	Rational(int nparNumerator = 1, int nparDenominator = 1);
	Rational& operator=(Rational &rNum);
	bool operator ==(Rational rNum);
	virtual ~Rational();
};

#endif // !defined(AFX_RATIONAL_H__86C32594_F543_435F_B747_A69A9F600959__INCLUDED_)