Passing an array of varying to a function and iterating through it?

Question

Can anyone tell me why this code is throwing an unknown compile error? I want to learn how to iterate through arrays with a function, albeit somewhat technical for C++ and the resources on the internet seem to be highly varied.

#include <iostream>
using namespace std;
// create a funciton which calculates the sum of the values within a given array
int multiplyArr(int arr1[], int size){
int sum = 0;
for (int i = 0; i < size; i++){
sum += arr1[i];
}
return sum;
}
// create the array and output the return value of the function
int main() {
int vals_counter = 4;
int vals[] = {5,6,8,10};
cout >> multiplyArr(vals, vals_counter);
return 0;
}

Answer 1

You have a syntax error in main, cout >> should be cout <<

Answer 2

Thanks Jojo, I'm guessing 'size_t' is in the standard library?

Answer 3

Just a little thing, try to use type 'size_t' for 'vals_counters'.
'size_t' is a type for variables that contain the size of an array ('size_t' is very similar to 'int' but if you have good habits, you'll code good code).