摘要: public class Demo07 { public static void main(String[] args) { int a = 10; int b = 20; a+=b; //a=a+b //a-=b; a=a-b System.out.println(a); //字符串连接符 +,S 阅读全文
posted @ 2021-06-30 22:00 shum 阅读(49) 评论(0) 推荐(0)