Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int flag = -1;
    for(int i=0;i<n-2;i++){
        if(*(mem+1)-1==(*mem) && *(mem+1)+1==*(mem+2)){
            flag = i;
            break;
        }
        mem++;
    }
    return flag;
}

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;
}