123

code_segment/shili.cpp

@@ -1,5 +1,28 @@
 #include<iostream>
 using namespace std;
+
+class Wood{
+private:
+    int length;
+    int width;
+public:
+    int get_length(){
+        return this->length;
+    }
+    int get_width(){
+        return this->width;
+    }
+};
+
+class desk:public wood{
+private:
+    int height;
+public:
+    int get_height(){
+        return this->height;
+    }
+};
+
 int add(int a,int b){
     int c = a+b;
     return c;