private static void RunExamples(VendingMachine vendingMachine) { var example1 = vendingMachine.GetChangeInCoins(itemValue: 35, userPaid: 50); PrettyPrint(example1, itemValue: 35, userPaid: 50); var example2 = vendingMachine.GetChangeInCoins(itemValue: 15, userPaid: 20); PrettyPrint(example2, itemValue: 15, userPaid: 20); var example3 = vendingMachine.GetChangeInCoins(itemValue: 18, userPaid: 25); PrettyPrint(example3, itemValue: 18, userPaid: 25); var example4 = vendingMachine.GetChangeInCoins(itemValue: 4, userPaid: 10); PrettyPrint(example4, itemValue: 4, userPaid: 10); var example5 = vendingMachine.GetChangeInCoins(itemValue: 31, userPaid: 5000); PrettyPrint(example5, 31, 5000); }