using System;
var counter = new Counter();
counter.IncBy(1);
//counter.Count is 1
counter.IncBy(2, 5);
//counter.Count is 11
Console.WriteLine(counter.Count);
class Counter {
public int Count { get; private set; }
public void IncBy(int value) {
Count += value;
}
public void IncBy(int value, int amount) {
Count += value * amount;
}
}