59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int i = 0, prev, ct = 0;
    while(i<n)
    {
        if(i)
        {
            if((*(mem + i) - prev) == 1){ct++;} 
            else{ct=0;}
        }

        prev = *(mem + i);
        i++;

        if(ct==2)
        {
            return i-3;
        }
    }
    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;
}