diff --git a/11.2.md b/11.2.md
index fcff22e4..b9a23d7a 100644
--- a/11.2.md
+++ b/11.2.md
@@ -92,33 +92,32 @@ GDB的一些常用命令如下所示
 
 	该命令用来改变运行过程中的变量值，格式如：`set variable <var>=<value>`
 ## 调试过程
-我们通过下面这个代码来演示如何通过GDB来调试Go程序，下面是将要演示的代码：
-
-	//文件名gdbfile.go
-	package main
-
-	import (
-		"fmt"
-		"time"
-	)
-
-	func counting(c chan<- int) {
-		for i := 0; i < 10; i++ {
-			time.Sleep(2 * time.Second)
-			c <- i
-		}
-		close(c)
-	}
-
-	func main() {
-		msg := "Starting main"
-		fmt.Println(msg)
-		bus := make(chan int)
-		msg = "starting a gofunc"
-		go counting(bus)
-		for count := range bus {
-			fmt.Println("count:", count)
-		}
+我们通过下面这个代码来演示如何通过GDB来调试Go程序，下面是将要演示的代码：
+
+	package main
+
+	import (
+		"fmt"
+		"time"
+	)
+
+	func counting(c chan<- int) {
+		for i := 0; i < 10; i++ {
+			time.Sleep(2 * time.Second)
+			c <- i
+		}
+		close(c)
+	}
+
+	func main() {
+		msg := "Starting main"
+		fmt.Println(msg)
+		bus := make(chan int)
+		msg = "starting a gofunc"
+		go counting(bus)
+		for count := range bus {
+			fmt.Println("count:", count)
+		}
 	}
 
 编译文件，生成可执行文件gdbfile: