定义分数类，使其具有完善的操作（+、-、*、/）。要求：①分数的分子和分母采用int型②分数的运算结果应为最简分数。

2009-12-31 08:32:24 295 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

设计一个表示分数的类Fraction。这个类用两个int类型的变量分别表示分子和分母。设计一个表示分数的类Fraction。这个类用两个int类型的变量分别表示分子和分母。这个类的构造函数是： Fraction(int a, int b) 构造一个a/b的分数。这个类要提供以下的功能： double toDouble(); 将分数转换为double Fraction plus(Fraction r); 将自己的分数和r的分数相加，产生一个新的Fraction的对象。注意小学四年级学过两个分数如何相加的哈。 Fraction multiply(Fraction r); 将自己的分数和r的分阅读详情

求答案！！！！！！！！！！！谢谢啊！！！

...全文

Badcase归因分析“四部曲” badcase是业内的专业名词，简单解释一下。bad是坏，case是案例，说白了就是模型或者具体规则无法很好预测的那些案例。以分类模型为例，本来一个样本应该是负类的，结果预测为正类，那这个样本就能被称为bad case。那相对应的就是good case就是优秀案例。阅读详情

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lirg8405 2009-12-31

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#include <iostream>
using namespace std;
class CScore
{
long int Molecular; //分子
long int Denominator; //分母
public:
CScore(){Molecular=0; Denominator=1;};
CScore(long int M, long int D):Molecular(M),Denominator(D){};
~CScore(){Molecular=0; Denominator=1;};
CScore& operator=(const CScore &data);
//分数运算
CScore operator+(const CScore &data);
CScore& operator+=(const CScore &data);
CScore operator-(const CScore &data);
CScore& operator-=(const CScore &data);
CScore operator*(const CScore &data);
CScore& operator*=(const CScore &data);
CScore operator/(const CScore &data);
CScore& operator/=(const CScore &data);

void The_lowest_common(CScore &data); //求最大公约数
void Show()
{
cout<<"分子＝"<<Molecular<<" 分母＝"<<Denominator<<endl;
}
};
//-----------------------------------------------------------------
CScore& CScore::operator=(const CScore &data)
{
Molecular = data.Molecular;
Denominator = data.Denominator;

The_lowest_common(*this);
return *this;
}
//-----------------------------------------------------------------
CScore CScore::operator+(const CScore &data)
{
CScore tmp;
tmp.Molecular = Molecular*data.Denominator + Denominator*data.Molecular;
tmp.Denominator = Denominator*data.Denominator;

The_lowest_common(tmp);
return tmp;
}
//-----------------------------------------------------------------
CScore& CScore::operator+=(const CScore &data)
{
Molecular = Molecular*data.Denominator + Denominator*data.Molecular;
Denominator = Denominator*data.Denominator;

The_lowest_common(*this);
return *this;
}
//-----------------------------------------------------------------
CScore CScore::operator-(const CScore &data)
{
CScore tmp;
tmp.Molecular = Molecular*data.Denominator - Denominator*data.Molecular;
tmp.Denominator = Denominator*data.Denominator;

The_lowest_common(tmp);
return tmp;
}
//-----------------------------------------------------------------
CScore& CScore::operator-=(const CScore &data)
{
Molecular = Molecular*data.Denominator - Denominator*data.Molecular;
Denominator = Denominator*data.Denominator;

The_lowest_common(*this);
return *this;
}
//-----------------------------------------------------------------
CScore CScore::operator*(const CScore &data)
{
CScore tmp;
tmp.Molecular = Molecular*data.Molecular;
tmp.Denominator = Denominator*data.Denominator;

The_lowest_common(tmp);
return tmp;
}
//-----------------------------------------------------------------
CScore& CScore::operator*=(const CScore &data)
{
Molecular = Molecular*data.Molecular;
Denominator = Denominator*data.Denominator;

The_lowest_common(*this);
return *this;
}
//-----------------------------------------------------------------
CScore CScore::operator/(const CScore &data)
{
CScore tmp;
tmp.Molecular = Molecular*data.Molecular;
tmp.Denominator = Denominator*data.Molecular;

The_lowest_common(tmp);
return tmp;
}
//-----------------------------------------------------------------
CScore& CScore::operator/=(const CScore &data)
{
Molecular = Molecular*data.Molecular;
Denominator = Denominator*data.Molecular;

The_lowest_common(*this);
return *this;
}
//-----------------------------------------------------------------
void CScore::The_lowest_common(CScore &data)
{
long int fz,fm;
long int max,min;
long int gys;

fz = data.Molecular;
fm = data.Denominator;
min = fz > fm ? fm : fz;
max = fz < fm ? fm : fz;
gys = max % min;
while (gys != 0) //存在余数，辗转相除
{
max = min;
min = gys;
gys = max % min;
}
data.Molecular /= min;
data.Denominator /= min;
}
//-----------------------------------------------------------------
int main()
{
CScore a1(86,128);
CScore a2(32,36);

a1.The_lowest_common(a1);
a1.Show();
a2.The_lowest_common(a2);
a2.Show();

CScore a3;
a3 = a1+a2;
a3.Show();

a1 += a2;
a1.Show();

return 0;
}

我来看看CB 2009-12-31

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看不太明白。帮顶

定义分数类，使其具有完善的操作（+、-、*、/）。要求：①分数的分子和分母采用int型②分数的运算结果应为最简分数。

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