What does int n = sizeof(arr) / sizeof(int)?

#1

Also explain its difference if we write int n = sizeof(arr) / sizeof(arr[0])

#2

int n = sizeof(arr) / sizeof(int) this provides the size of array (named arr) given its of int type i.e each element occupies 4 bytes, but int n = sizeof(arr) / sizeof(arr[0]) but this makes no such assumption and would provide the correct size regardless of type of array.

#3

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