一个木函软件测试计划书,创建一个名为Rational的类，进行分数运算。编写一个程序测试该类。要求使用C++语言...

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buukq

推荐于 2018.03.26

采纳率：47%    等级：9

已帮助：764人

#include

using namespace std;

class Rational

{

private:

int numeraror;//分子

int denominator;//分母

int x(int a,int b)

{

while(a=a%b)swap(a,b);

return b;

}

public:

Rational():numeraror(0),denominator(1){}

Rational(int a):numeraror(a),denominator(1){ }

Rational(int a,int b)

{

int n = x(a,b);

numeraror = a/n;

denominator = b/n;

}

operator double()

{

return (double)numeraror/denominator;

}

const Rational operator+(const Rational& t)

{

return Rational(

this->numeraror * t.denominator + t.numeraror * this->denominator,

this->denominator * t.denominator

);

}

const Rational operator-(const Rational& t)

{

return Rational(

this->numeraror * t.denominator - t.numeraror * this->denominator,

this->denominator * t.denominator

);

}

const Rational operator*(const Rational& t)

{

return Rational(

this->numeraror * t.numeraror,

this->denominator * t.denominator

);

}

const Rational operator/(const Rational& t)

{

return Rational(

this->numeraror * t.denominator ,

t.numeraror * this->denominator

);

}

friend ostream& operator<

void show(){cout<

void showf(){cout<

};

ostream& operator<

{

os<

if(r.denominator!=1)os<

return os;

}

int main()

{

cout<

cout<

cout<

<

Rational a(2,3),b;

b = Rational(1,6);

cout<

a.showf();

cout<

b.show();

cout<

cout<

cout<

cout<

return 0;

}

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