小学生四则运算程序的简单测试与封装

 1 package SuanFa;
 2 
 3 public class Core {
 4     public double jia(double a,double b)
 5     {
 6         double c=a+b;
 7         return c;
 8     }
 9     public double jian(double a,double b)
10     {
11         double c=a-b;
12         return c;
13     }
14     public double cheng(double a,double b)
15     {
16         double c=a*b;
17         return c;
18     }
19     public double chu(double a,double b)
20     {
21         double c=a/b;
22         return c;
23     }
24 }