Array: What is error?

Question

#include <iostream>
using namespace std;

void printArray(int arr[]) {
int a=(end(arr)-begin(arr)); //or a=sizeof(arr)/sizeof(arr[0];

for(int x=0; x <a ; x++) {
cout <<arr[x]<< endl;
}
}

int main() {
int myArr[]= {42, 33, 88,9,77,66};

printArray(myArr);
}

Answer 1

template <size_t N>
void printArray(int (&arr)[N]) {
for(int x=0; x < N; x++) {
cout << arr[x] << endl;
}
}