complex.cpp

用VC++做的一个复数的加减运算

#include "complex.h"

Complex::Complex(double r,double i)
{
	real = r;
	imag = i;
}

Complex Complex::add(const Complex &c)
{
	Complex t;
	t.real = real + c.real;
	t.imag = imag + c.imag;
	return t; //返回对象，需调用复制构造函数，有效率上的代价，
}

Complex Complex::sub(const Complex &c)
{
	Complex t;
	t.real = real - c.real;
	t.imag = imag - c.imag;
	return t; //返回对象，需调用复制构造函数，有效率上的代价
}

double Complex::Real()  const
{
	return real;
}

double Complex::Imag() const
{
	return imag;
}