Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *p, int n) {
   for (int i = 0; i < n - 2; i++) {
        if (*(p + i + 1) == *(p + i) + 1 &&
            *(p + i + 2) == *(p + i + 1) + 1) {
            return i; 
        }
    }
    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;
}

Solving Approach