how can i calculate length of array in c++

Question

is there any function like in javascript we have array.length

Answer 1

In c++ I think there is only for strings, strlen() (including the corresponding library)

If you want the length of an array you can do the following:
sizeof(arr) / sizeof(arr[0])

There also seems to be a size function according to this code
https://code.sololearn.com/cbtIgot3vYe3/?ref=app

Answer 2

If you're using the "array" class from the library "array", then you can use the "size" method to get it's length. Here's a sample code
https://code.sololearn.com/cKFk9AI1LLFF/?ref=app