Refer to static variable through its class name : static instance variable « Class « C++ Tutorial

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C++ Tutorial » Class » static instance variable

9.25.2.Refer to static variable through its class name

#include <iostream> 

using namespace std; 

 

class MyClass { 

public: 

  static int num; 

  void display() { cout << num << endl; } 

}; 

 

int MyClass::num; // define num 

 

int main() 

{ 

  MyClass a, b; 

 

  // Set num through its class name. 

  MyClass::num = 100; 

 

  a.display();

  b.display();

 

  // Set num through an object. 

  a.num = 200; 

 

  a.display();

  b.display();

 

  return 0; 

}

9.25.static instance variable
	9.25.1.	Use a static instance variable
	9.25.2.	Refer to static variable through its class name
	9.25.3.	static data members

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