What is the output for the given program?

int sum(int arr[], int n)

{

int sum = 0; 

for (int i = 0; i < n; i++)

sum += arr[i];

return sum;

}

 main()

{

int arr[] = {12, 30, 40, 15};

int n = sizeof(arr) / sizeof(arr[0]);

cout << sum(arr, n);

return 0;

}