Obrtanje niza

#include <stdio.h>
#define N_MAX 100

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

void main()
{
    while(1)
        {
            int n,i,j;
            double a[N_MAX],b;
            printf("Unesite n duzinu niza: ");
            scanf("%d", &n);

            if (n<=0 || n>N_MAX) break;

            printf("\nUnesite elemente niza za obrtanje: ");
            for(i=0;i<n;i++) scanf("%lf",&a[i]);

            for(i=0, j=n-1; i<j; i++,j--)
            {
                b=a[i]; a[i] = a[j]; a[j]=b;
            }

            printf("\nObrnuti niz izgleda ovako: ");    for (i=0;i<n; printf(" %.2f",a[i++]));
            printf("\n\n");

        }
}