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 *ptr1 = mem;
    int *ptr2 = mem+1;
    int *ptr3 = mem+2;

    for (int i = 0; i < n-3; i++) {
        if ((*ptr1 + 1 == *ptr2) && (*ptr2 + 1 == *ptr3)) {
            return i;
        }
        ptr1++;
        ptr2++;
        ptr3++;
    }
    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;
}