Java編程 定義一個複數類，該數具備整數類型的兩個屬性a和b，分別表明一個複數的實部和虛部，鍵盤輸入兩個複數，實現它們的加減乘除運算

複數的四則運算法則：（c1:-7+5i，c2:5-3i）

 

運行結果：

 1 package test02;
 2 import java.util.*;
 3 public class Complex {
 4     private double a;
 5     private double b;
 6     public double getA() {
 7         return a;
 8     }
 9     public void setA(double a) {
10         this.a = a;
11     }
12     public double getB() {
13         return b;
14     }
15     public void setB(double b) {
16         this.b = b;
17     }
18     public Complex(double x,double y)
19     {
20         this.a=x;
21         this.b=y;
22     }
23     public Complex complexAdd(Complex c)
24     {
25         Complex add=new Complex(this.a+c.a, this.b+c.b);
26         return add;
27     }
28     public Complex complexMinus(Complex c)
29     {
30         Complex minus=new Complex(this.a-c.a, this.b-c.b);
31         return minus;
32     }
33     public Complex complexMultiplicatin(Complex c)
34     {
35         Complex multiplicatin=new Complex(this.a*c.a-this.b*c.b, this.b*c.a+this.a*c.b);
36         return multiplicatin;
37     }
38     public Complex complexDivision(Complex c)
39     {
40         Complex division=new Complex((this.a*c.a+this.b*c.b)/(c.a*c.a+c.b*c.b), (this.b*c.a-this.a*c.b)/(c.a*c.a+c.b*c.b));
41         return division;
42     }
43     public String toString()
44     {
45         if(this.b<0)
46             return this.a+"-"+(-this.b)+"i";
47         return this.a+"+"+this.b+"i";
48     }
49     public static void main(String[] args) {
50         // TODO Auto-generated method stub
51         System.out.println("輸入c1的實部和虛部：");
52         Scanner in=new Scanner(System.in);
53         double a1=in.nextDouble();
54         double a2=in.nextDouble();
55         System.out.println("輸入c2的實部和虛部：");
56         double a11=in.nextDouble();
57         double a22=in.nextDouble();
58         System.out.println("c1:"+a1+"+("+a2+")i");
59         System.out.println("c2:"+a11+"+("+a22+")i");
60         Complex c1=new Complex(a1,a2);
61         Complex c2=new Complex(a11,a22);
62         System.out.println("c1和c2的運算結果：");
63         System.out.println("c1+c2="+c1.complexAdd(c2));
64         System.out.println("c1-c2="+c1.complexMinus(c2));
65         System.out.println("c1*c2="+c1.complexMultiplicatin(c2));
66         System.out.println("c1/c2="+c1.complexDivision(c2));
67     }
68 
69 }