Static Member
Static variable
Static variable are initialized to zero before the
first object created.
Only one copy of static variable exist for a whole
program.
All object share one copy of static variable.
It will remain in the memory till end of the
program.
Static function
A static function may be called by itself without depending on any object
To access a static function we used,
classname::staticfuction();
Example:
#include <iostream> using namespace std; class statx{ private: int x; public: //here static variable initiate static int sum; //here constructor create statx(){ x=sum++; } //here static function initiate static void stat(){ cout<<"result is "<<sum<<"\n"; } void number(){ cout<<"Number is: "<<x<<"\n"; } }; //here static variable initiate globally int statx::sum; int main() { statx o1,o2,o3,o4; o1.number(); o2.number(); o3.number(); o4.number(); //here static access without depending on object statx::stat(); //here static variable print cout<<"static var sum "<<o1.sum; return 0; }