diff --git a/src/Computer.java b/src/Computer.java
index bc163df..2d070ca 100644
--- a/src/Computer.java
+++ b/src/Computer.java
@@ -111,12 +111,10 @@ public class Computer extends JFrame{
             public void actionPerformed(ActionEvent arg0) {
                 a = xsArea.getText();
                 String[] sz = new String[2];
-//分割字符串：+ 或 - 或 * 或 /
-                sz=a.split("\\+|\\-|\\*|\\/");//把分割的两个部分放进sz中
+                sz=a.split("\\+|\\-|\\*|\\/");
                 double b = 0;
                 if(flag == 0) {
-//输出原数
-                    b = Double.parseDouble(a);
+       b = Double.parseDouble(a);
                 }
 
                 else if(flag == 1) {