博客园

计算分数

2017-03-20

 

  1 import java.util.*;
  2 class Scanf{
  3     Scanner sc = new Scanner(System.in);
  4     int fenzi = sc.nextInt();
  5     int fenmu = sc.nextInt();
  6 }
  7 class Fraction
  8 {
  9     private int fenzi;
 10     private int fenmu;
 11     public void setFenzi(int afenzi)
 12     {
 13        this.fenzi = afenzi;
 14     }
 15     public void setFenmu(int afenmu)
 16     {
 17        this.fenmu = afenmu;
 18     }
 19     public int getFenzi()
 20     {
 21        return fenzi;
 22     }
 23     public int getFenmu()
 24     {
 25        return fenmu;
 26     }
 27     //此处为减法运算！
 28     public void  subFraction(Fraction f){
 29         int a = this.fenzi * f.fenmu - this.fenmu * f.fenzi;
 30         int b = this.fenmu * f.fenmu;
 31         Fraction af = new Fraction();
 32         af.setFenzi(a);
 33         af.setFenmu(b);
 34         af.showInfor(); 
 35     }
 36     //此处为加法运算！
 37     public void addFraction(Fraction f)
 38     {
 39        int a = this.fenzi * f.fenmu + this.fenmu * f.fenzi;
 40        int b = this.fenmu * f.fenmu;
 41        Fraction af = new Fraction();
 42        af.setFenzi(a);
 43        af.setFenmu(b);
 44        af.showInfor(); 
 45     }
 46     //此处为乘法运算
 47     public void multFraction(Fraction f){
 48         int a = this.fenzi*f.fenzi;
 49         int b = this.fenmu*f.fenmu;
 50         Fraction af = new Fraction();
 51         af.setFenzi(a);
 52         af.setFenmu(b);
 53         af.showInfor();
 54     }    
 55     //此处为除法运算！
 56     public void divFractio(Fraction f){
 57         int a = this.fenzi*f.fenmu;
 58         int b = this.fenmu*f.fenzi;
 59         Fraction af = new Fraction();
 60         af.setFenzi(a);
 61         af.setFenmu(b);
 62         af.showInfor();
 63     }
 64     ///**************************************
 65     public static  void res(){
 66             ////
 67     }
 68     public void showInfor()
 69     {
 70         int a = this.fenzi;
 71         int b = this.fenmu;
 72         int  small = a>b?b:a;
 73         int max = 1;
 74         for(int i =1;i<=b;i++){
 75             if(a%i == 0 && b%i==0){
 76                 max = i;
 77             }
 78         }
 79         if(b/max == 0){
 80             System.out.print("除数不能为0");
 81         }else{
 82        System.out.println("运算结果为： "+(a/max)+"/"+b/max);
 83         }
 84     }
 85 }
 86 class _res{
 87 
 88 }
 89 class TestDemao6{
 90 
 91     public static void main(String[] args)
 92     {
 93         //实例化对象！
 94         Fraction f1 = new Fraction();
 95         Fraction f2 = new Fraction();
 96         Scanner sc = new Scanner(System.in);
 97         //提示输入算发符号。
 98         for(int i =1;i<=4;i++){
 99             System.out.println("进行运算请输入:"+i+"对应的分别为加减乘除");
100         }
101         //输入运算方法。
102         int bbbb = sc.nextInt();
103         //对输入的内容进行判断
104         if(bbbb == 1){    
105             System.out.println("请输入第一个分数的分子和分母：");
106             Scanf s1 = new Scanf();
107             System.out.println("请输入第二个分数的分子和分母：");
108             Scanf s2 = new Scanf();
109             f1.setFenzi(s1.fenzi);
110             f1.setFenmu(s1.fenmu);
111             f2.setFenzi(s2.fenzi);
112             f2.setFenmu(s2.fenmu);
113             f1.addFraction(f2);
114         }else if(bbbb == 2){
115             System.out.println("请输入第一个分数的分子和分母：");
116             Scanf s1 = new Scanf();
117             System.out.println("请输入第二个分数的分子和分母：");
118             Scanf s2 = new Scanf();
119             f1.setFenzi(s1.fenzi);
120             f1.setFenmu(s1.fenmu);
121             f2.setFenzi(s2.fenzi);
122             f2.setFenmu(s2.fenmu);
123             f1.subFraction(f2);
124         }else if(bbbb == 3){
125             System.out.println("请输入第一个分数的分子和分母：");
126             Scanf s1 = new Scanf();
127             System.out.println("请输入第二个分数的分子和分母：");
128             Scanf s2 = new Scanf();
129             f1.setFenzi(s1.fenzi);
130             f1.setFenmu(s1.fenmu);
131             f2.setFenzi(s2.fenzi);
132             f2.setFenmu(s2.fenmu);
133             f1.multFraction(f2);
134         }else if(bbbb == 4){
135             System.out.println("请输入第一个分数的分子和分母：");
136             Scanf s1 = new Scanf();
137             System.out.println("请输入第二个分数的分子和分母：");
138             Scanf s2 = new Scanf();
139             f1.setFenzi(s1.fenzi);
140             f1.setFenmu(s1.fenmu);
141             f2.setFenzi(s2.fenzi);
142             f2.setFenmu(s2.fenmu);
143             f1.divFractio(f2);
144         }else{
145             System.out.println("输入错误！只能输入1-2-3-4其中的一个！！");
146         }
147     }
148 }
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posted @ 2017-03-20 09:27  Mu_gua  阅读(181)  评论(0)    收藏  举报