422.cpp

C++实训教程

//422.cpp
#include <iostream.h>
class MyComplex	
{
   private:
   	double r,i;
   public:
	MyComplex(){r=0;i=0;}
	MyComplex(double x,double y=0)
	{ r=x;i=y ;}
	void Init(double a=0,double b=0)
	{ r=a; i=b;}
	double GetReal(){ return r;}
	double GetImag(){ return i;}
	void Disp();
	void Multi(double m)
	{   r=r*m;  i=i*m;}
	void AddReal(double x){r+=x;}
};

void MyComplex::Disp()
{
  	cout << r ;
  	if (i>=0) cout << "+" ;
  	cout << i << "i\n";
}

main()
{
   MyComplex a,b,c,*p;
   p=&a;
   a.Init(10,-10);
   p->Disp();
   b.Init(200);
   c.Init(-300,300);
   c.Multi(10);
   cout << "c=" << c.GetReal() << "+"
	   <<c.GetImag() << "i"<<endl;
   a.Disp();

   return 0;
}
/*程序运行的结果：
10-10i
c=-3000+3000i
10-10i
*/