Merge pull request #74 from domainname/patch-2

给程序输入加上换行符

eBook/07.2.md

@@ -84,19 +84,19 @@ slice 在内存中的组织方式实际上是一个有 3 个域的结构体：
     	//slice1 = slice1[0:7 ] // panic: runtime error: slice bound out of range
     }
     
-输出：
-	Slice at 0 is 2
-	Slice at 1 is 3
-	Slice at 2 is 4
-	The length of arr1 is 6
-	The length of slice1 is 3
-	The capacity of slice1 is 4
-	Slice at 0 is 2
-	Slice at 1 is 3
-	Slice at 2 is 4
-	Slice at 3 is 5
-	The length of slice1 is 4
-	The capacity of slice1 is 4
+输出：  
+	Slice at 0 is 2  
+	Slice at 1 is 3  
+	Slice at 2 is 4  
+	The length of arr1 is 6  
+	The length of slice1 is 3  
+	The capacity of slice1 is 4  
+	Slice at 0 is 2  
+	Slice at 1 is 3  
+	Slice at 2 is 4  
+	Slice at 3 is 5  
+	The length of slice1 is 4  
+	The capacity of slice1 is 4  
 
 如果 s2 是一个 slice，你可以将 s2 向后移动一位 `s2 = s2[1:]`，但是末尾没有移动。slice 只能向后移动，`s2 = s2[-1:]` 会导致编译错误。slice 不能被重新分片以获取数组的前一个元素。
 
@@ -162,19 +162,19 @@ make 的使用方式是：`func make([]T, len, cap)` 其中 cap 是可选参数
     	fmt.Printf("The capacity of slice1 is %d\n", cap(slice1))
     }
 
-输出结构：
-	Slice at 0 is 0
-	Slice at 1 is 5
-	Slice at 2 is 10
-	Slice at 3 is 15
-	Slice at 4 is 20
-	Slice at 5 is 25
-	Slice at 6 is 30
-	Slice at 7 is 35
-	Slice at 8 is 40
-	Slice at 9 is 45
-	The length of slice1 is 10
-	The capacity of slice1 is 10
+输出结构：  
+	Slice at 0 is 0  
+	Slice at 1 is 5  
+	Slice at 2 is 10  
+	Slice at 3 is 15  
+	Slice at 4 is 20  
+	Slice at 5 is 25  
+	Slice at 6 is 30  
+	Slice at 7 is 35  
+	Slice at 8 is 40  
+	Slice at 9 is 45  
+	The length of slice1 is 10  
+	The capacity of slice1 is 10  
 
 因为字符串是纯粹不可变的字节数组，它们也可以被切分成 slice。