How to pass an array in a function

Suppose there is a function fun().
I have to pass an array.
When should I pass the array like fun(int *arr) and when should I pass it like fun(int arr[ ] ).

@tanyaa.sood you can use either of the notations in any scenario.

So that means there is no difference between the two methods?

@tanyaa.sood there is no difference in the practical usage.

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