Static data member in class.

Write a program to implement static data member in class.

Algorithm to solve the above problem:

1. Create class item with static data member as count.

2. Create a member function to increment the count.

3. Declare the static datamember using scope resolution operator.

4. Display the count value.

Implementation of above program:

#include<iostream>

using namespace std;

class item

{

static int count;

int num;

public:

void getdata(int a)

{

num=a;

count++;

cout<<"Number"<<num;

cout<<"\n";

}

void showcount()

{

cout<<"Count";

cout<<count<<"\n";

}

};

int item::count;

int main()

{

item a,b,c;

a.showcount();

b.showcount();

c.showcount();

a.getdata(20);

b.getdata(30);

c.getdata(40);

a.showcount();

b.showcount();

c.showcount();

}

The output of the above program is tested on www.jdoodle.com

Output:

Count : 0

Count : 0

Count : 0

Number : 20

Number : 30

Number : 40

Count : 3

Count : 3

Count : 3

Thanks

Mukesh Rajput