//	Ex610.cc

//	Sec. 6.1 of lecture
//	Pointer declaration

#include <stdio.h>
#include <iostream.h>

main()
{
 struct Student
  {
    long long int matrikel;
              int skz;
              char name[30], vorname[20];
  };

 char            *cp;		// pointer on char
 int          x, *px;		// int-variable, pointer on int
 float           *fp[20];	// array of 20 pointers on float
 float           *(fap[20]);	// pointer on an array of 20 float
 Student         *ps;		// pointer on structure Student
 char           **ppc;		// pointer on pointer of char

 struct Student2
  {
    long long int matrikel;
              int skz;
              char *pname, *pvorname;
  };
  
 cout << endl;
 cout << " Size  px : " << sizeof(px) << endl;
 cout << " Value px : " << px << endl;
//			   px is undefined (LINUX-gcc)
//			or px = 0 = 0x0    (SGI-CC)
 
 px = 0;
 if ( px == 0)
  {
    cout << endl << "px == NULL " << px << endl;
  }

}