基本运算符 

 1 public class Demo6 {
 2     public static void main(String[] args) {
 3         //二元运算符
 4         //ctrl + D :复制当前行到下一行
 5         int a = 10;
 6         int b = 20;
 7         int c = 25;
 8         int d = 25;
 9 
10         System.out.println(a+b);
11         System.out.println(a-b);
12         System.out.println(a*b);
13         System.out.println(a/(double)b);
14     }
15 }
 1 public class Demo7 {
 2     public static void main(String[] args) {
 3         long a = 212343453431L;
 4         int b = 10;
 5         short c = 10;
 6         byte d = 8;
 7         int e = 21;
 8 
 9         System.out.println(e%b);//e/b     21/10 = 2...1
10 
11         System.out.println(a+b+c+d);//Long
12         System.out.println(b+c+d);//Int
13         System.out.println(c+d);// Int
14 
15     }
16 }

 

posted @ 2021-03-12 22:53  HeartlessHero  阅读(50)  评论(0)    收藏  举报