Consider the following function implementation: void myclass::ref_addition (int a, int b, int& sum) { sum = a+b; }

The main function might have code that looks like this: myclass foo; int num1 = 1; int num2 = 2; int total = 0; foo.ref_addition(num1, num2, total);

When this code completes, what will the value in the total variable be? Provide the integer value in the box below.