Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    int out = -1;
    mem++;
    for (int i = 1; i < n - 1; i++) {
        if ((*mem == (*(mem - 1) + 1)) && (*mem == (*(mem + 1) - 1))) {
            out = i - 1;
            break;
        }
        mem++;
    }
    return out;
}

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