Cpp-practice

main.cpp

@@ -0,0 +1,158 @@
+#include <iostream>
+#include "string"
+#include "vector"
+#include "math.h"
+using namespace std;
+class Shape;
+class rect;
+class Right_triangle;
+class circle;
+class square;
+class  Shape{
+public:
+    virtual double surface()=0;
+    virtual  void draw()=0;
+};
+
+class ListShape{
+protected:
+
+    vector<Shape*>list_of_shape;
+public:
+    ListShape(){}
+    Shape* find(double S){
+        for (auto i=list_of_shape.begin(); i <list_of_shape.end() ; i++) {
+            if ((*i)->surface()==S) {
+                return *i;
+            }
+        }
+        cout<<"Not Found."<<endl;
+        return nullptr;
+    }
+    void add(Shape& a){
+        list_of_shape.push_back(&a);
+
+    }
+       void remove(Shape* a){
+           for (auto i=list_of_shape.begin(); i <list_of_shape.end() ; i++) {
+               if ((*i)==a) {
+                   list_of_shape.erase(i);
+               }}
+
+
+    }
+    Shape* find(Shape* a){
+        for (auto i=list_of_shape.begin(); i <list_of_shape.end() ; i++) {
+            if ((*i)==a) {
+                return *i;
+            }
+        }
+        cout<<"Not Found."<<endl;
+        return nullptr;
+    }
+   void print(){
+       for (auto i=list_of_shape.begin(); i <list_of_shape.end() ; i++) {
+           (*i)->draw();
+                   cout<<endl;
+           }
+
+    }
+  void sort(){
+      for (auto i=list_of_shape.begin(); i <list_of_shape.end() ; i++) {
+          for (auto j=i+1 ;  j< list_of_shape.end(); j++) {
+              if ((*i)->surface()>(*j)->surface()) {
+                  Shape* temp=*i;
+                  *i=*j;
+                  *j=temp;
+
+          }
+
+          }
+      }
+    }
+};
+
+class rect:public  Shape,public ListShape{
+    int x,y,s;
+public:
+    void draw(){
+        cout<<"I am a rectangle with leghnt and  width ("<<x<<","<<y<<") "<< "with surface "<< s<<endl;
+    }
+    rect(int X,int Y){x=X;
+    y=Y;
+    s=X*Y;}
+
+
+    double surface(){
+        return s;
+
+    }
+
+
+};
+class Right_triangle:public Shape,public ListShape{
+    int a,b;
+    double s;
+public:
+    void draw(){
+        cout<<"I am a Right triangle with leghnt and height "<<"("<<a<<","<<b <<") "<< "with surface "<< s<<endl;
+    }
+
+
+    Right_triangle(int aa,int bb){a=aa;
+    b=bb;
+    s=(double)a*b/2;}
+    double surface() {
+        return s;
+    }};
+class square:public Shape,public ListShape{
+    int a,s;
+public:
+    void draw(){
+        cout<<"I am a square with leghnt "<<a<< " "<< "with surface "<< s<<endl;
+    }
+
+
+    square(int A){a=A;s=A*A;}
+    double surface(){
+        return s;}
+};
+class circle:public Shape,public ListShape{
+    int r;
+    double s;
+public:
+    void draw(){
+        cout<<"I am a circle with radius "<<r<< " "<< "with surface "<< s<<endl;
+    }
+
+
+    circle(int R){r=R;s=((R)*R)*(3.14);}
+    double surface(){
+     //   s=((r)^2)*M_PI;
+        return s;
+}
+
+};
+
+int main() {
+ListShape l;
+circle b(3);
+Right_triangle c(3,4);
+square d(4);
+rect a(3,4);
+l.add(b);
+l.add(a);
+l.add(c);
+l.add(d);
+l.find(6)->draw();
+l.remove(&d);
+l.find(16);
+cout<<b.surface();
+cout<<a.surface()<<endl;
+cout<<l.find(&a)->surface()<<endl;
+//l.print();
+l.sort();
+//l.print();
+
+    return 0;
+}