c++ program to declare the global object

Program -

 

#include<iostream.h>

#include<conio.h>

Class abc

{

public:

int a;

int b;

void read()

{

cin>>a>>b;

}

void display()

{

cout<<a<<b;

}

};

class abc m1;

void main()

{

void fun();

m1.a=20;

m1.read();

m1.display();

fun();

{

m1.b=30;

m1.read();

m1.display();

}

}

Output

20 40 77 20 30