docs/csharp/fundamentals/tutorials/snippets/object-oriented-programming/Program.cs - main - aprogrammer/dotnet-docs

docs/csharp/fundamentals/tutorials/snippets/object-oriented-programming/Program.cs

65 строк2 KB

Bill Wagner

Update tutorials to .NET 6 (#28404)

28 фев 2022, 21:50

28 фев 2022, 21:500e4df77

using OOProgramming;

IntroToClasses();

// <FirstTests>
var giftCard = new GiftCardAccount("gift card", 100, 50);
giftCard.MakeWithdrawal(20, DateTime.Now, "get expensive coffee");
giftCard.MakeWithdrawal(50, DateTime.Now, "buy groceries");
giftCard.PerformMonthEndTransactions();
// can make additional deposits:
giftCard.MakeDeposit(27.50m, DateTime.Now, "add some additional spending money");
Console.WriteLine(giftCard.GetAccountHistory());

var savings = new InterestEarningAccount("savings account", 10000);
savings.MakeDeposit(750, DateTime.Now, "save some money");
savings.MakeDeposit(1250, DateTime.Now, "Add more savings");
savings.MakeWithdrawal(250, DateTime.Now, "Needed to pay monthly bills");
savings.PerformMonthEndTransactions();
Console.WriteLine(savings.GetAccountHistory());
// </FirstTests>

// <TestLineOfCredit>
var lineOfCredit = new LineOfCreditAccount("line of credit", 0, 2000);
// How much is too much to borrow?
lineOfCredit.MakeWithdrawal(1000m, DateTime.Now, "Take out monthly advance");
lineOfCredit.MakeDeposit(50m, DateTime.Now, "Pay back small amount");
lineOfCredit.MakeWithdrawal(5000m, DateTime.Now, "Emergency funds for repairs");
lineOfCredit.MakeDeposit(150m, DateTime.Now, "Partial restoration on repairs");
lineOfCredit.PerformMonthEndTransactions();
Console.WriteLine(lineOfCredit.GetAccountHistory());
// </TestLineOfCredit>
static void IntroToClasses()
{
    var account = new BankAccount("<name>", 1000);
    Console.WriteLine($"Account {account.Number} was created for {account.Owner} with {account.Balance} balance.");

    account.MakeWithdrawal(500, DateTime.Now, "Rent payment");
    Console.WriteLine(account.Balance);
    account.MakeDeposit(100, DateTime.Now, "friend paid me back");
    Console.WriteLine(account.Balance);

    Console.WriteLine(account.GetAccountHistory());

    // Test that the initial balances must be positive:
    try
    {
        var invalidAccount = new BankAccount("invalid", -55);
    }
    catch (ArgumentOutOfRangeException e)
    {
        Console.WriteLine("Exception caught creating account with negative balance");
        Console.WriteLine(e.ToString());
    }

    // Test for a negative balance
    try
    {
        account.MakeWithdrawal(750, DateTime.Now, "Attempt to overdraw");
    }
    catch (InvalidOperationException e)
    {
        Console.WriteLine("Exception caught trying to overdraw");
        Console.WriteLine(e.ToString());
    }
}