/* Include lib */
#include <stdio.h>

/* Define */
#define ARRAY_MAX       15
#define ARRAY_INPUT     { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 } //, 15 }

int array_input[ARRAY_MAX] = ARRAY_INPUT;

/* API reverse array */
void reverse_array(int *arr, int arr_num)
{
    int i, tmp, last = arr_num - 1;
    
    for (i = 0; i < (arr_num / 2); i++) {
        tmp = arr[i];
        arr[i] = arr[last - i];
        arr[last - i] = tmp;
    }
}

/* Main func interract with user */
int main()
{
    int i;

    printf("Array input : ");
    for (i = 0; i< ARRAY_MAX; i++) {
        printf("%d ", array_input[i]);
    }
    printf("\n");

    /* Reverse array */
    reverse_array(&array_input[0], ARRAY_MAX);
    
    printf("Array output: ");
    for (i = 0; i< ARRAY_MAX; i++) {
        printf("%d ", array_input[i]);
    }
    printf("\n");

    return 0;
}