59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    int counter = 0;
    int curr_value = *mem;
    for(int i=1;i<n;i++)
    {
       if(*(mem+i) == curr_value +1)
       {
           counter++;
           if(counter == 2) return i-2;
       }
       else
       {
          counter = 0;
       }
       curr_value = *(mem+i);
    }
    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;
}