/*
  Allocate space for a integer array dynamically, request user input, 
  and then print the array backwards.
*/

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

#define N 10

int main(void)
{
	int *a, i;
	
	//allocate space for N integers
	a = malloc(N * sizeof(int));
	if (!a){
		printf("Out of memory!\n");
		return 1;
	}

	//request user input
	printf("Please enter %d intergers:\n", N);
	for(i=0; i < N; i++)
		scanf("%d", &a[i]);

	//print the array backwards
	printf("print integers backwards:\n");
        for(i=N-1; i >= 0; i--)
		printf("%d ", a[i]);  
	printf("\n");

	//release allocated memory
	free(a);

	return 0;	
}