59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *arr, int n) {
    // Write your pointer-based logic here
    int* p1 = arr, *p2 = arr + 1, *p3 = arr + 2;
    for(int i = 0; i <= n - 3; i++)
    {
        if(*p1 + 1 == *p2  && *p2 + 1 == *p3)
            return i;
        *p1++;
        *p2++;
        *p3++;
    }
    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;
}