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 pattern_index = -1;
    int i = 0;
    while (i < (n - 2)) {
        if (*mem == (*(mem + 1) - 1) && *(mem + 1) == (*(mem + 2) - 1)) {
            pattern_index = i;
            break;
        }
        i++;
        mem++;
    }
    return pattern_index;
}

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;
}