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

// An introduction to pointers and dynamic
// creation of objects.

#include<iostream.h>

class Greetings 
{
public:           // for simplicity, it's all public
   const int size = 20 ;
   char message[size] ;
// METHODS
   void set( char m[] ) ; 
   void print( void ) ;
} ;

// Implement the methods

void Greetings::
set ( char m[] )
{
   int i ;
   for ( i=0; i<size; i++ )
   {
      message[i] = m[i] ;
      // terminate if copy finished
      if ( message[i] == '\0' ) break ;
   }
   // just in case argument m was defective.
   message[size-1] = '\0' ;
}

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


void main() 
{

   Greetings * gp ; // the * means that gp is a pointer to a Greetings

   //CREATION of a Greetings.
   gp = new Greetings ;
   
   // gp points to set, w/ argu. "Hello..."
   gp->set( "Hello World" ) ; 

   // gp points to print method.
   gp->print() ;

   // destruction of gp.
   delete gp ;

}