#include <iostream>
using namespace std;
#include <cstring>					//for strcpy(), etc.
#include <conio.h>					//For getch()
////////////////////////////////////////////////////////////////
class String						//user-defined string type
   {
   protected:
      enum { SZ = 80 };				//size of all String objects
      char str[SZ];					//holds a C-string
   public:
      String()						//no-arg constructor
         { str[0] = '\0'; }
      String( char s[] )			//1-arg constructor
         { strcpy(str,s); }			//convert C-string to String
      void display()				//display the String
         { cout << str; }
		operator char*()
		{ return str;}
   };
 
class Pstring : public String
{
	public:
		Pstring(char s[]): String(s)
		{	if(strlen(s)>(SZ-1)){
				strncpy(str,s,79);
				str[79] = '\0';
			}
			else				
				String(s);
		}
};
 
//class Pstring2 : public Pstring
//{
//		public:
//			Pstring2() : Pstring
 
 
 
//};
////////////////////////////////////////////////////////////////
int main()
{
	cout << "THIS SENTENCE IS SHORTER THAN SZ:" << endl;
	Pstring2 s1 = "Never read the instructions.";
	s1.display();
	cout << endl <<"THIS SENTENCE IS LONGER THAN SZ:" << endl;
	Pstring2 s2 = "I would have to say that the greatest single achievement " 
				 "of the American medica";
	s2.display();
	cout << endl <<"THIS SENTENCE DEMONSTRATES THE LEFT, MID AND RIGHT FUNCTIONS:" << endl;
	Pstring2 s3 = "A long time ago in a galaxy far, far away.";
	s3.display();
 
 
 
	getch();
	return 0;						
}