using System.Collections.Generic;

using static System.Console;

​

var test = new Test();

​

test.NormalMethod();

WriteLine(test.A);

​

foreach (var result in test.IteratorMethod())

{

    WriteLine(result);

}

​

WriteLine(test.A); // This prints what number?

​

public struct Test

{

    public int A;

    public void NormalMethod()

    {

        A = 5;

    }

    public IEnumerable<int> IteratorMethod()

    {

        A = 7;

        yield return A;

    }

}