Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    int index = -1;
    for (int i=0;i<n-1;i++)
    {
        if (((*(mem + 1) - *mem) == 1) && ((*(mem+2) - *(mem+1))==1))
        {
            index = i;
            break;
        }
        mem++;
    }
    return 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;
}

Solving Approach