Lecture 156
//Procedures and Functions
//Code:
#include <iostream>
#include <conio.h>
using namespace std;
void Extern(); //
Prototype
int x=21;
void display(); //
Prototype
main ()
{
int x=20;
cout
<<"\n Variable Local x : "<<x;
display();
Extern();
getch();
return 0;
}
void Extern()
{
cout
<<"\n Variable Global : "<<x;
extern int x;
x=23;
cout
<<"\n Variable external : "<<x;
}
void display()
{
cout
<<"\n Variable Global : "<<x;
}
