59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    for(int i = 0; i < n - 2; i++) {
        int pattern_idx = i;
        int pattern_count = 1;
        for(int j = i; j < n; j++) {
            if ((*(mem + j) + 1) == *(mem + j + 1)) {
                pattern_count++;
            } else {
                break;
            }

            if (pattern_count == 3) {
                return pattern_idx;
            }
        }
    }
    return -1;
}

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;
}