complex.cpp

这是我上学时的C＋＋实验。。。 里面包含了类的应用

#include <iostream.h>

class complex   //复数类
{
public:
	complex();
	complex(double r);
	complex(double r,double i);
	void print();
	void set(double r,double i);
private:
	double real,image;
};


complex::complex()
{
	real=0;
	image=0;
}

complex::complex(double r)
{
	real=r;
	image=0;
}

complex::complex(double r,double i)
{
	real=r;
	image=i;
}

void complex::print()
{
	cout<<"复数是:"<<endl;

	if (image==0)
		cout<<real<<endl;
	if (real==0 && image==0)
		cout<<"0"<<endl;
	if (real!=0 && image!=0)
		cout<<real<<"+"<<image<<"i"<<endl;
}

void complex::set(double r,double i)
{
	real=r;
	image=i;
}

void main()
{
	complex c1;
	complex c2(6.8);
	complex c3(5.6,7.9);
	c1.print();
	c2.print();
	c3.print();
}