//实现一个有理数类,包括大小比较,有理数的加减乘除。测试你的类。
#include <iostream>
#include <stdlib.h>
class Rational
{
public:
Rational(int num,int denom); //实现有理数的形式"num/denom"
Rational operator+(Rational rhs); //加法重载
Rational operator-(Rational rhs); //减法重载
Rational operator*(Rational rhs); //乘法重载
Rational operator/(Rational rhs); //除法重载
void print(); //打印结果输出
private:
void normalize(); //对分数的简化处理
int numerator; //分子
int denominator; //分母
};
Rational::Rational(int num,int denom)
{
numerator = num;
denominator = denom;
normalize();
}
void Rational::normalize()
{
//确保分母为正
if(denominator < 0)
{
numerator = -numerator;
denominator = -denominator;
}
//欧几里得算法
int a = abs(numerator);
int b = abs(denominator);
while(b>0)
{
int t = a%b;
a = b;
b = t;
}
numerator/=a;
denominator/=a;
}
Rational Rational::operator+(Rational rhs)
{
int a = numerator;
int b = denominator;
int c = rhs.numerator;
int d = rhs.denominator;
int e = a*b +c*d;
int f = b*d;
return Rational(e,f);
}
Rational Rational::operator-(Rational rhs)
{
rhs.numerator = -rhs.numerator;
return operator+(rhs);
}
Rational Rational::operator*(Rational rhs)
{
int a = numerator;
int b = denominator;
int c = rhs.numerator;
int d = rhs.denominator;
int e = a*c;
int f = b*d;
return Rational(e,f);
}
Rational Rational::operator/(Rational rhs)
{
int t = rhs.numerator;
rhs.numerator = rhs.denominator;
rhs.denominator = t;
return operator*(rhs);
}
void Rational::print()
{
if(numerator%denominator == 0)
std::cout<<numerator / denominator;
else
std::cout<<numerator <<"/"<<denominator;
}
int main()
{
Rational f1(2,16);
Rational f2(7,8);
Rational res = f1+f2;
f1.print();
std::cout<<" + ";
f2.print();
std::cout<<" = ";
res.print();
std::cout<<"\n";
res = f1 - f2;
f1.print();
std::cout<<" - ";
f2.print();
std::cout<<" = ";
res.print();
std::cout<<"\n";
res = f1 * f2;
f1.print();
std::cout<<" * ";
f2.print();
std::cout<<" = ";
res.print();
std::cout<<"\n";
res = f1 / f2;
f1.print();
std::cout<<" / ";
f2.print();
std::cout<<" = ";
res.print();
std::cout<<"\n";
return 0;
}
C++实现一个有理数类,包括大小比较,有理数的加减乘除。测试你的类。
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转载自blog.csdn.net/ancientear/article/details/80751568
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