Different methods of passing array as arguments?

Answer 1

void pass(int *arr,int len){
}

void pass(int arr[],int len){
}

Answer 2

can you give a example of a program

Answer 3

sorry an example for it

Answer 4

template <int SIZE>
void f(int (&arr)[SIZE]) {
cout << arr[0];
cout << SIZE;
}

int main() {
int arr[] = {1,1,1};
f(arr); // prints 13
return 0;
}