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

#define ARRAY_SIZE 75
#define MIN_VALUE (-5)
#define MAX_VALUE 20

int main (void)
{
	int a[ARRAY_SIZE];
	int max_diff, diff;
	int i, j;
	int i1, i2;

	srand(time(NULL));
	for (i = 0; i < ARRAY_SIZE; i++)
    {
		a[i] = MIN_VALUE + rand() % MAX_VALUE;
    }

	max_diff = (a[0] < a[1]) ? (a[1] - a[0]) : (a[0] - a[1]);
	i1 = 0;
	i2 = 1;

	for(i = 0; i < ARRAY_SIZE; ++i)
	{
		for(j = i + 1; j < ARRAY_SIZE; ++j)
		{
			int diff = (a[i] < a[j]) ? (a[j] - a[i]) : (a[i] - a[j]);

			if(diff > max_diff)
			{
				max_diff = diff;
				i1 = i;
				i2 = j;
			}
		}
	}

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

	printf("Maximum difference is %d, between elements %d:%d and %d:%d\n", max_diff, i1, a[i1], i2, a[i2]);
	return 0;
}