59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int seq = 0;
    int res = -1;

    for (int i = 0; i < n - 1; i++) {
        if (*(mem + i + 1) == (*(mem + i) + 1)) {
            if (res == -1) {
                res = i;
            }

            seq += 1;

            if(seq == 2) {
                return res;
            }

        } else {
            seq = 0;
            res = -1;
        }
    }

    return res;
}

int main() {
    int n, arr[100];
    scanf("%d", &n);

    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    int res = find_pattern(arr, n);
    printf("%d", res);

    return 0;
}