Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n)
{
   /* int *ptr = mem;

    while (ptr < mem + (n - 3))
    {
        int a = *ptr;

        if ((*(ptr + 1) == (a + 1)) && (*(ptr + 2) == (a + 2)))
        {
            return (int)(ptr-mem);
        }

        ptr++;
        
    }
    */

    int *p1 = mem;
    int *p2 = mem + 1;
    int *p3 = mem + 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;
}

Solving Approach