/* Array and pointers */

#include<stdio.h>
#include <stdlib.h>


int main()
{
  int array1[] = {100,200,300} ;
  int* ptr1 ;

  //An array can be treated as a pointer
  //array1 = ptr1 ;

  ptr1 = array1  ;
  printf( "%d\n" , *ptr1 ) ;
  printf( "%d\n" , ptr1[0] ) ;

  printf( "%d\n" , *(ptr1+1) ) ;
  printf( "%d\n" , *array1 ) ;
  printf( "%d\n" , *(array1+1) ) ;

  // A pointer can be treated as an array.
  ptr1 = (int*)malloc( sizeof(int) * 10  ) ;
  *ptr1 = 10 ;     *(ptr1+1) = 20 ;
  printf( "%d\n" , ptr1[0] ) ;
  printf( "%d\n" , ptr1[1] ) ;
  free ( ptr1) ;

 }