How to find length of array in c++ ?

Answer 1

https://stackoverflow.com/questions/4108313/how-do-i-find-the-length-of-an-array

else, why not use dynamic arrays i.e. <vector>

Answer 2

An array length counting code

https://code.sololearn.com/cIdHe7Dqo9kX/?ref=app

Answer 3

Interger version

https://code.sololearn.com/c7PPjRmo24ve/?ref=app

Answer 4

#include <iostream>
#include <array>
using namespace std;
int main () {
array<int,5> myArr;
cout << "size: " << myArr.size() << endl;
int arr[5];
cout << "sizeof: " << sizeof(arr)/sizeof(*arr) << endl;
}
Personally, except for simple cases, I use the first form of array.