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 *ptr = mem;
    int first = -1;
    for (int i = 0; i< (n-3); i++){
        if ((*(ptr +i +2) - *(ptr +i +1) == 1) && (*(ptr +i +1) - *(ptr +i) == 1)){
            first = i;
            return first;
        }

    }
    
    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