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


int main( int argc, char **argv) {

  int *iarray;
  int i;
  int N;


  // allocate memory to store the number of elements in the array we passed through command line
  if ( argc > 1 ){
    N = atoi( argv[1] );
  } else {
    N = 100;
  }
  iarray = (int*) malloc ( N * sizeof(int) );


  // fill in array with interger values from 1 to 100
  for ( i = 0 ; i < N ; i++ ){
     iarray[i] = i + 1;
  }

  // print last element of an array
  printf(" last element of the array is equal to %d\n", iarray[ N-1 ] );

  // free memory
  free(iarray);

  return 0;

}