fraction.cpp

多态性实验

#include<iostream.h>
#include"fraction.h"
#include"string.h"
#include"math.h"
void fraction::print()
{
	cout<<fz<<"/"<<fm<<endl;
}
 fraction::operator+(fraction a)
{
	fraction frac;
	frac.fm=fm*a.fm;
	frac.fz=fz*a.fm+fm*a.fz;
	return frac;
}
 fraction::operator-(fraction a)
 {
	fraction frac;
	frac.fm=fm*a.fm;
	frac.fz=fz*a.fm-fm*a.fz;
	return frac;
}
 fraction::operator*(fraction t,fraction p)
{
	fraction frac;
	frac.fm=fm*p.fm;
	frac.fz=fz*p.fz;
	 return frac;
}
 fraction::operator/(fraction t,fraction p)
  {
	  fraction  frac;
	  frac.fm=t.fz*p.fm;
	  frac.fz=fm*p.fz;
      return frac;
  }