How to print fibonacci series upto 50 terms in c?

Question

I want to print the Fibonacci series up to 50 terms but when the n is 50 it's not working it works until n <= 48. Is there any way to do that?

#include <stdio.h>

int main()
{
    int n;
    scanf("%d", &n);
    unsigned long long arr[50] = {0, 1};

    for (int i = 0, j = 2; i < n; i++, j++)
    {
        arr[j] = arr[i] + arr[i + 1];
    }

    for (int i = 0; i < n; i++)
    {
        printf("%d => %llu\n", i, arr[i]);
    }

    return 0;
}

Answer 1

well the problem is solved I did mistakes in the loop condition so here is the updated code.

#include <stdio.h>

int main()
{
    int n;
    scanf("%d", &n);
    unsigned long long arr[50] = {0, 1};

    for (int i = 2; i < n; i++)
    {
        arr[i] = arr[i - 1] + arr[i - 2];
    }

    for (int i = 0; i < n; i++)
    {
        printf("%llu ", arr[i]);
    }

    return 0;
}