Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int count = 1;
    int *base = mem;
    int *current = mem + 1;
    while (current < base + n)
    {
        if (*current == *(current - 1) + 1)
        {
            count++;
        }
        else
        {
            if (count >= 3)
            {
                return (current - count) - base;
            }
            count = 1;
        }
        ++current;
    }
    if (count >= 3)
    {
        return (current - count) - base;
    }
    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