diff --git a/practise/practise.cpp b/practise/practise.cpp
index 694a42d..dabe1a9 100644
--- a/practise/practise.cpp
+++ b/practise/practise.cpp
@@ -4,11 +4,33 @@
 #include<random>
 #include<graphics.h>
 #include<conio.h>
+#include<vector>
+//创建方向的枚举类型
+enum Direction{UP,DOWN,LEFT,RIGHT};
+//贪吃蛇的抽象基类
 class Base {
 public:
-	int positionX;
-
+	Base() {
+		m_x = 50;
+		m_y = 50;
+	}
+	Base(int x,int y) {
+		m_x = x;
+		m_y = y;
+	}
+	//绘图
+	virtual void show() {
+		setlinecolor(BLUE);
 
+		fillcircle(m_x, m_y, 6);
+	}
+	//移动
+	void move(int x,int y) {
+		m_x += x;
+		m_x += y;
+	}
+	int m_x;
+	int m_y;
 private:
 };
 /*
@@ -17,17 +39,32 @@ private:
 具有的方法：移动
 */
 class Snake :public Base{
-
+public:
+	int snake_lenth;
+	int speed = 100;
+	//利用vector来存储蛇的节点
+	std::vector<Base> nodes;
+	Direction direction;
+	Snake() {
+		//默认向右移动
+		direction = RIGHT;
+		//位置
+		nodes.push_back(Base());
+		speed = 100;
+	}
+	//显示蛇的身体
+	void Show() {
+		for(int i=0;i<nodes.size();i++){
+			nodes[i].show();
+		}
+	}
 };
 class Food : public Base {
-
+public:
 };
 int main() {
 	while (true) {
 
-
-
-
 	}
 
 }
\ No newline at end of file