write a program to print the occurrence of unique elements in an array

1//write a program to print the occurrence of unique elements in an array
2#include <stdio.h>
3
4int main(int argc, char const *argv[])
5{
6
7    int arr[] = {4, 256, 2, 256, 4, 3, 3, 3, 5}, seen, count;
8    int arr_length = sizeof(arr) / sizeof(int);
9
10    for (int i = 0; i < arr_length; i++)
11    {
12
13        seen = 0;
14        count = 1;
15        for (int j = 0; j < i; j++)
16        {
17            if (arr[i] == arr[j])
18            {
19                seen = 1;
20            }
21            // printf("first loop\n");
22        }
23        if (seen == 0)
24        {
25
26            for (int k = i + 1; k < arr_length; k++)
27            {
28                if (arr[i] == arr[k])
29                {
30                    count++;
31                    /* code */
32                    // printf("condition\n");
33                }
34                // printf("second loop\n");
35            }
36            printf("%d occurs %d times\n", arr[i], count);
37        }
38    }
39   
40
41    return 0;
42}
43