From e2716c9e59ebcac64f51e1226eb022f7100e7e9e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E8=88=92=E9=9D=99?= <846671507@qq.com>
Date: Thu, 6 Aug 2020 23:05:12 +0800
Subject: [PATCH] hello.txt

---
 jjcc2.txt | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 jjcc2.txt

diff --git a/jjcc2.txt b/jjcc2.txt
new file mode 100644
index 0000000..747c1bf
--- /dev/null
+++ b/jjcc2.txt
@@ -0,0 +1,33 @@
+package cn.csj.oo3;
+
+import java.util.Scanner;
+
+public class jjcc {
+	
+	 static void sum(double a, double b) {
+		double resum=a+b;
+		System.out.println(a+"+"+b+"="+resum);
+	}
+	
+	static void subtraction(double a,double b) {
+		double resub=a-b;
+		System.out.println(a+"-"+b+"="+resub);
+	}
+	
+	static void mul(double a,double b) {
+		double remul=a*b;
+		System.out.println(a+"*"+b+"="+remul);
+	}
+	
+	static void division(double a,double b) {
+		double redivision=0;
+		if(b!=0) {
+			redivision=a/b;
+		}
+		else {
+			redivision=0;   /*表示错误*/
+		}
+		System.out.println(a+"÷"+b+"="+redivision);
+	}
+
+}