MathUtility类实现—C++

这具体是什么类早已忘却，根据当年的注释里面有如下几个功能：实现 float, int, double 类型的 max, min, abs 函数。实现计算圆形面积，球体体积的函数。实现计算矩形面积，长方体的函数。
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/*
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功能：实现MathUtility类
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作者：windCoder
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日期：2013-11-07
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*/
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#include <iostream>
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using namespace std;
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/************************************************************************
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功能：实现 float, int, double 类型的 max, min, abs 函数。
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************************************************************************/
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class Complex
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{
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public:
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  Complex(int aX,int aY,float iX,float iY,double rX,double rY);
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  Complex();
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  ~Complex();
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  int max(int aX,int aY);
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  int min(int aX,int aY );
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  int abs(int aX);
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  float max(float aX,float aY);
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  float min(float aX,float aY );
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  float abs(float aX);
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  double max(double aX,double aY);
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  double min(double aX,double aY );
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  double abs(double aX);
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private:
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  int m_aX;
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  int m_aY;
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  float m_iX;
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  float m_iY;
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  double m_rX;
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  double m_rY;
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};
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Complex::Complex(int aX,int aY,float iX,float iY,double rX,double rY)
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{
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   m_aX = aX;
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   m_aY = aY;
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   m_iX = iX;
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   m_iY = iY;
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   m_rX = rX;
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   m_rY = rY;
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}
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Complex::Complex()
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{
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  m_aX = NULL;
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  m_aY = NULL;
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  m_iX = NULL;
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  m_iY = NULL;
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  m_rX = NULL;
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  m_rY = NULL;
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}
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Complex::~Complex()
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{
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}
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int Complex:: max(int aX,int aY)
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{
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  if (aX>aY)
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  {
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    return aX;
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  }
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  return aY;
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}
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int Complex::min(int aX,int aY )
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{
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  if (aX<aY)
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  {
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    return aX;
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  }
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  return aY;
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}
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int Complex::abs(int aX)
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{
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  if (aX>0)
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  {
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    return aX;
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  }
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  return -aX;
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}
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float Complex::max(float aX,float aY)
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{
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  if (aX>aY)
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  {
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    return aX;
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  }
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  return aY;
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}
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float Complex::min(float aX,float aY )
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{
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  if (aX<aY)
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  {
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    return aX;
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  }
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  return aY;
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}
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float Complex::abs(float aX)
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{
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  if (aX>0)
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  {
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    return aX;
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  }
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  return -aX;
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}
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double Complex::max(double aX,double aY)
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{
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  if (aX>aY)
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  {
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    return aX;
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  }
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  return aY;
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}
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double Complex::min(double aX,double aY )
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{
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  if (aX<aY)
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  {
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    return aX;
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  }
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  return aY;
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}
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double Complex::abs(double aX)
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{
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  if (aX>0)
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  {
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    return aX;
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  }
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  return -aX;
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}
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/*---------------------------------------------------------*/
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/************************************************************************
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功能：实现计算圆形面积，球体体积的函数。
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************************************************************************/
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class BallAndCircle
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{
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public:
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    BallAndCircle();
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    ~BallAndCircle();
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    double getBallVolume(double iR);
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    double getCircleArea(double iR);
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private:
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  double m_iR;
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  const double PI;
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};
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BallAndCircle::BallAndCircle():PI(3.14)
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{
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   m_iR = 0;
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}
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BallAndCircle::~BallAndCircle(){};
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double BallAndCircle::getBallVolume(double iR)
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{
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  double result;
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  m_iR = iR;
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  result = (4*m_iR * m_iR * m_iR *PI)/3;
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  return result;
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}
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double BallAndCircle::getCircleArea(double iR)
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{
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  double result;
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  m_iR = iR;
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  result = m_iR * m_iR *PI;
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  return result;
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}
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/*----------------------------------------------------------*/
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/************************************************************************
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功能：实现计算矩形面积，长方体的函数。
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************************************************************************/
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class RectangularAndCuboid
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{
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public:
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  RectangularAndCuboid();
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  ~RectangularAndCuboid();
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  double getRectangularArea(double iLong,double iWidth);
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  double getCuboidVolume(double iLong,double iWidth,double iHigh);
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private:
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  double m_iLong;
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  double m_iWidth;
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  double m_iHigh;
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};
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RectangularAndCuboid::RectangularAndCuboid()
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{
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  m_iLong = NULL;
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  m_iWidth = NULL;
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  m_iHigh = NULL;
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}
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RectangularAndCuboid::~RectangularAndCuboid(){};
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double RectangularAndCuboid::getRectangularArea(double iLong,double iWidth)
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{
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   double result;
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   m_iLong = iLong;
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   m_iWidth = iWidth;
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   result = m_iLong * m_iWidth;
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   return result;
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}
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double RectangularAndCuboid::getCuboidVolume(double iLong,double iWidth,double iHigh)
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{
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  double result;
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  m_iLong = iLong;
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  m_iWidth = iWidth;
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  m_iHigh =iHigh;
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  result = m_iLong * m_iWidth * m_iHigh;
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  return result;
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}
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/*----------------------------------------------------------*/
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/************************************************************************
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功能：主函数
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************************************************************************/
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int main(void)
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{
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   Complex one;
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   BallAndCircle ball;
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   RectangularAndCuboid Rect,Cuboid;
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   double x,y,z=0;
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   //1 ）实现 float, int, double 类型的 max, min, abs 函数。
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   cout<<"请输入两个实数：";
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   cin>>x>>y;
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   cout<<"两个数中大者为："<<one.max(x,y)<<" "<<"小者为："<<one.min(x,y)<<endl;
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   cout<<x<<"的绝对值是："<<one.abs(x)<<endl;
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   cout<<y<<"的绝对值是："<<one.abs(y)<<endl;
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   // 2 ）实现计算圆形面积，球体体积的函数。
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   cout<<"请输入圆的半径：";
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   cin>>x;
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   cout<<"半径为"<<x<<"的圆的面积为:"<<ball.getCircleArea(x)<<endl;
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   cout<<"半径为"<<x<<"的球的体积为:"<<ball.getBallVolume(x)<<endl;
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   // 3 ）实现计算矩形面积，长方体的函数。
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   cout<<"请输入长方形的长和宽：";
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   cin>>x>>y;
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   cout<<"长方形的面积为:"<<Rect.getRectangularArea(x,y)<<endl;
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   cout<<"请输入长方体的长、宽、高：：";
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   cin>>x>>y>>z;
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   cout<<"长方体的体积为:"<<Cuboid.getCuboidVolume(x,y,z)<<endl;
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  system("pause");
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  return 0;
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}
MathUtility类实现—C++

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