59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int index =0,first_data,second_data,third_data;
    for(int i=0; i<n-2; i++)
    {
        first_data = *(mem+i);
        second_data = *(mem+i+1);
        third_data = *(mem+i+2);
        // printf("i=%d, first_data=%d, second_data=%d, third_data=%d, \n",i,first_data,second_data,third_data);
        if((first_data==second_data-1)&&(second_data==third_data-1))
        {
            // printf("index value i=%d \n", i);
            return 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;
}