Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    if(n < 3) return -1;
    int *p = mem;
    for (int i = 0; i < n - 2; i++) {
        int *p1 = p;
        int *p2 = p + 1;
        int *p3 = p + 2;

        if (*p1 + 1 == *p2 && *p2 + 1 == *p3) {
            return i; 
        }

        p++; 
    }
    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