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static class in C++

By Fragile FoxFragile Fox on Dec 01, 2020 
#include <iostream>
 
using namespace std;

class Box {
   public:
      static int objectCount;
      
      // Constructor definition
      Box(double l = 2.0, double b = 2.0, double h = 2.0) {
         cout <<"Constructor called." << endl;
         length = l;
         breadth = b;
         height = h;

         // Increase every time object is created
         objectCount++;
      }
      double Volume() {
         return length * breadth * height;
      }
      static int getCount() {
         return objectCount;
      }
      
   private:
      double length;     // Length of a box
      double breadth;    // Breadth of a box
      double height;     // Height of a box
};

// Initialize static member of class Box
int Box::objectCount = 0;

int main(void) {
   // Print total number of objects before creating object.
   cout << "Inital Stage Count: " << Box::getCount() << endl;

   Box Box1(3.3, 1.2, 1.5);    // Declare box1
   Box Box2(8.5, 6.0, 2.0);    // Declare box2

   // Print total number of objects after creating object.
   cout << "Final Stage Count: " << Box::getCount() << endl;

   return 0;
}

Source: www.tutorialspoint.com

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2

static in class c++

By Alive AngelfishAlive Angelfish on Aug 06, 2020 
#include <iostream>

class Entity {
public:
	static int  x,y;
	static void Print() {
		std::cout << x << ", " << y << std::endl;
	}// sta1tic methods can't access class non-static members
};
int Entity:: x;
int Entity:: y;// variable x and y are just in a name space and we declared them here
int main() {
	Entity e;
	Entity e1;
	e.x = 5;
	e.y = 6;
	e1.x = 10;
	e1.y = 10;
	e.Print();//output => 10 because variable x and y being static point to same block of memory
	e1.Print();//output => 10 because variable x and y being static point to same block of memory
	Entity::x;	//you can also acess static variables and functions like this without creating an instance
    Entity::Print();	//you can also acess static variables and functions like this without creating an instance
	std::cin.get();
}

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2

static class in C++

By Fragile FoxFragile Fox on Dec 01, 2020 
#include <iostream>
 
using namespace std;

class Box {
   public:
      static int objectCount;
      
      // Constructor definition
      Box(double l = 2.0, double b = 2.0, double h = 2.0) {
         cout <<"Constructor called." << endl;
         length = l;
         breadth = b;
         height = h;
         
         // Increase every time object is created
         objectCount++;
      }
      double Volume() {
         return length * breadth * height;
      }
      
   private:
      double length;     // Length of a box
      double breadth;    // Breadth of a box
      double height;     // Height of a box
};

// Initialize static member of class Box
int Box::objectCount = 0;

int main(void) {
   Box Box1(3.3, 1.2, 1.5);    // Declare box1
   Box Box2(8.5, 6.0, 2.0);    // Declare box2

   // Print total number of objects.
   cout << "Total objects: " << Box::objectCount << endl;

   return 0;
}

Source: www.tutorialspoint.com

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1

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