New to GCC - running a array insertion gives me different output locally than on online compiler

I am going through a TuturialsPoint algorithm and trying to run the C code with GCC. Would anyone know why my local output would be different that what is produced by an online C compiler?

#include <stdio.h>

main()
{
    int LA[] = {1, 3, 5, 7, 8};
    int item = 10, k = 3, n = 5;
    int i = 0, j = n;

    printf("The original array elements are :\n");

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

    n = n + 1;

    while (j >= k)
    {
        LA[j + 1] = LA[j];
        j = j - 1;
    }

    LA[k] = item;

    printf("The array elements after insertion :\n");

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

Expected output (from online gcc compiler)

The original array elements are :
LA[0] = 1 
LA[1] = 3 
LA[2] = 5 
LA[3] = 7 
LA[4] = 8 
The array elements after insertion :
LA[0] = 1 
LA[1] = 3 
LA[2] = 5 
LA[3] = 10 
LA[4] = 7 
LA[5] = 8 

My local output:

The original array elements are :
LA[0] = 1
LA[1] = 3
LA[2] = 5
LA[3] = 7
LA[4] = 8
The array elements after insertion :
LA[0] = 1
LA[1] = 3
LA[2] = 5
LA[3] = 7
LA[4] = 8
LA[5] = 6

I am using gcc version 8.2.0 (MinGW.org GCC-8.2.0-5)