59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n)
{
    int *p1=mem;
    int *p2=mem+n-2;
    for(int i=0;i<n-2;i++)
    {
       if((*(p1+i+1)==(*p1)+1)&&(*(p1+2+i)==*(p1+i+1)+1))
        {
            return i;
        } 
    }
  while(p1<p2)
    {

        if((*(p1+1)==(*p1)+1)&&(*(p1+2)==*(p1+1)+1))
        {
            return 1;
        }
        p1++;

        
    }
    // Write your pointer-based logic here
    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;
}