#include <stdio.h>
int main() {
enum { N = 3 };
int numbers[N] = {-50, 1, 30}; // mock data
char all_equal = 1;
int max = numbers[0];
for (int i = 1; i < N; i++) {
all_equal = all_equal && numbers[i] == max;
if (numbers[i] > max) max = numbers[i];
}
if (all_equal) printf("All numbers are equal.\n");
else printf("%d is the greatest among the numbers entered.\n", max);
}