diff --git a/practical_exercises/10_day_practice/day5/继承访问权限/私有继承.cpp b/practical_exercises/10_day_practice/day5/继承访问权限/私有继承.cpp
index 5bfcf94..bf46811 100644
--- a/practical_exercises/10_day_practice/day5/继承访问权限/私有继承.cpp
+++ b/practical_exercises/10_day_practice/day5/继承访问权限/私有继承.cpp
@@ -7,9 +7,9 @@ public:
     int getx(){return x; }
     void showx(){cout<<x<<endl; }
 };
-//˽�м̳�
-//������е�public��Ա������������private, private��Ա���������в��ɷ��ʡ�
-class derived:private base{
+//私有继承
+//基类的中的public成员在派生类中是private, private成员在派生类中不可访问。
+class derived:private Base{
 	int y;
 public:
 	void sety(int n){y=n;	}
@@ -22,5 +22,4 @@ int main(){
 	obj.sety(20);
 	obj.showx();//cannot access
 	obj.showy();	
-    system("pause");
 }