Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>
#include <stdint.h>

int find_pattern(int *mem, int n) {
    const int win_size = 3; 
    const int end = n - win_size;
    int *p1 = mem; 
    int *p2 = mem + 1; 
    int *p3 = mem + 2;
    for (int i = 0; i <= end; i++)
    {
        if ((*p1 == (*p2 - 1)) && (*p2 == (*p3 - 1)))
        {
            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;
}

Solving Approach