// OopHello.C
// (c) Burt Rosenberg 1996

// This program demonstrates a basic approach of Object
// Oriented Programming.

// Also introduces strings as array of char.

#include<iostream.h>
#include<strings.h>

class Greetings {
private:
   char * message ;
public:
   Greetings( char m[] ) ;
   void print(void) ;
   void set(char m[]) ;
} ;

Greetings::Greetings( char m[] ) {
   message = new char[strlen(m)+1] ;
   strcpy( message, m ) ;   
}

void Greetings::print ( void ) {
   cout << message << endl ;
}

void Greetings::set( char m[] ) {
   delete message ;
   message = new char[strlen(m)+1] ;
   strcpy( message, m ) ;   
}

void main() {

   Greetings hello( "Hello World" )  ;

   hello.print() ;
   hello.set( "Goodbye World" ) ;
   hello.print() ;

}