Immaging that you have a customer that should pay you €10, €10, €20, €30, €30. He already paid you €10, €20. You need to know what he still needs to pay you. How will C#/LINQ helps you to give the answer?
Het is vandaag 25-9-2023, dus is Alex 54 jaren, 5 maanden en 4 weken oud.