بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيم
Setelah kemarin kita belajar sedikit tentang Tipe Data (Data Type) dan beberapa case lain, kali ini saya akan buatkan sebuah program console app yang membahas lengkap tentang materi Tipe Data. Oke.. buat sebuah project console dengan nama BasicDataTypes. kemudian masukkan kode program berikut.
Read Code and Write Your Own Code !
using System;
// Need this to get BigInteger!
using System.Numerics;
namespace BasicDataTypes
{
internal class Program
{
private static void Main(string[] args)
{
Console.WriteLine("***** Fun with Basic Data Types *****\n");
LocalVarDeclarations();
DefaultDeclarations();
NewingDataTypes();
ObjectFunctionality();
DataTypeFunctionality();
CharFunctionality();
ParseFromStrings();
ParseFromStringsWithTryParse();
UseDatesAndTimes();
UseBigInteger();
DigitSeparators();
BinaryLiterals();
Console.ReadLine();
}
#region Local variable declarations
private static void LocalVarDeclarations()
{
Console.WriteLine("=> Data Declarations:");
// Local variables are declared and initialized as follows:
// dataType varName = initialValue;
int myInt = 0;
string myString;
myString = "This is my character data";
// Declare 3 bools on a single line.
bool b1 = true, b2 = false, b3 = b1;
// Very verbose manner in which to declare a bool.
System.Boolean b4 = false;
Console.WriteLine("Your data: {0}, {1}, {2}, {3}, {4}, {5}",
myInt, myString, b1, b2, b3, b4);
Console.WriteLine();
}
private static void DefaultDeclarations()
{
Console.WriteLine("=> Default Declarations:");
//int myInt = default;
}
private static void NewingDataTypes()
{
Console.WriteLine("=> Using new to create variables:");
bool b = new bool(); // Set to false.
int i = new int(); // Set to 0.
double d = new double(); // Set to 0.
DateTime dt = new DateTime(); // Set to 1/1/0001 12:00:00 AM
Console.WriteLine("{0}, {1}, {2}, {3}", b, i, d, dt);
Console.WriteLine();
}
#endregion Local variable declarations
#region Test Object functionality
private static void ObjectFunctionality()
{
Console.WriteLine("=> System.Object Functionality:");
// A C# int is really a shorthand for System.Int32.
// which inherits the following members from System.Object.
Console.WriteLine("12.GetHashCode() = {0}", 12.GetHashCode());
Console.WriteLine("12.Equals(23) = {0}", 12.Equals(23));
Console.WriteLine("12.ToString() = {0}", 12.ToString());
Console.WriteLine("12.GetType() = {0}", 12.GetType());
Console.WriteLine();
}
#endregion Test Object functionality
#region Test data type functionality
private static void DataTypeFunctionality()
{
Console.WriteLine("=> Data type Functionality:");
Console.WriteLine("Max of int: {0}", int.MaxValue);
Console.WriteLine("Min of int: {0}", int.MinValue);
Console.WriteLine("Max of double: {0}", double.MaxValue);
Console.WriteLine("Min of double: {0}", double.MinValue);
Console.WriteLine("double.Epsilon: {0}", double.Epsilon);
Console.WriteLine("double.PositiveInfinity: {0}",
double.PositiveInfinity);
Console.WriteLine("double.NegativeInfinity: {0}",
double.NegativeInfinity);
Console.WriteLine("bool.FalseString: {0}", bool.FalseString);
Console.WriteLine("bool.TrueString: {0}", bool.TrueString);
Console.WriteLine();
}
#endregion Test data type functionality
#region Test char data type
private static void CharFunctionality()
{
Console.WriteLine("=> char type Functionality:");
char myChar = 'a';
Console.WriteLine("char.IsDigit('a'): {0}", char.IsDigit(myChar));
Console.WriteLine("char.IsLetter('a'): {0}", char.IsLetter(myChar));
Console.WriteLine("char.IsWhiteSpace('Hello There', 5): {0}",
char.IsWhiteSpace("Hello There", 5));
Console.WriteLine("char.IsWhiteSpace('Hello There', 6): {0}",
char.IsWhiteSpace("Hello There", 6));
Console.WriteLine("char.IsPunctuation('?'): {0}",
char.IsPunctuation('?'));
Console.WriteLine();
}
#endregion Test char data type
#region Parsing data
private static void ParseFromStrings()
{
Console.WriteLine("=> Data type parsing:");
bool b = bool.Parse("True");
Console.WriteLine("Value of b: {0}", b);
double d = double.Parse("99.884");
Console.WriteLine("Value of d: {0}", d);
int i = int.Parse("8");
Console.WriteLine("Value of i: {0}", i);
char c = Char.Parse("w");
Console.WriteLine("Value of c: {0}", c);
Console.WriteLine();
}
private static void ParseFromStringsWithTryParse()
{
Console.WriteLine("=> Data type parsing with TryParse:");
if (bool.TryParse("True", out bool b))
{
Console.WriteLine("Value of b: {0}", b);
}
string value = "Hello";
if (double.TryParse(value, out double d))
{
Console.WriteLine("Value of d: {0}", d);
}
else
{
Console.WriteLine("Failed to convert the input ({0}) to a double", value);
}
Console.WriteLine();
}
#endregion Parsing data
#region Work with dates / times
private static void UseDatesAndTimes()
{
Console.WriteLine("=> Dates and Times:");
// This constructor takes (year, month, day)
DateTime dt = new DateTime(2015, 10, 17);
// What day of the month is this?
Console.WriteLine("The day of {0} is {1}", dt.Date, dt.DayOfWeek);
dt = dt.AddMonths(2); // Month is now December.
Console.WriteLine("Daylight savings: {0}", dt.IsDaylightSavingTime());
// This constructor takes (hours, minutes, seconds)
TimeSpan ts = new TimeSpan(4, 30, 0);
Console.WriteLine(ts);
// Subtract 15 minutes from the current TimeSpan and
// print the result.
Console.WriteLine(ts.Subtract(new TimeSpan(0, 15, 0)));
Console.WriteLine();
}
#endregion Work with dates / times
#region Use BigInteger
private static void UseBigInteger()
{
Console.WriteLine("=> Use BigInteger:");
BigInteger biggy = BigInteger.Parse("9999999999999999999999999999999999999999999999");
Console.WriteLine("Value of biggy is {0}", biggy);
Console.WriteLine("Is biggy an even value?: {0}", biggy.IsEven);
Console.WriteLine("Is biggy a power of two?: {0}", biggy.IsPowerOfTwo);
BigInteger reallyBig = BigInteger.Multiply(biggy,
BigInteger.Parse("8888888888888888888888888888888888888888888"));
BigInteger reallyBig2 = biggy * reallyBig;
Console.WriteLine("Value of reallyBig is {0}", reallyBig);
}
#endregion Use BigInteger
#region Use Digit Separators
private static void DigitSeparators()
{
Console.WriteLine("=> Use Digit Separators:");
Console.Write("Integer:");
Console.WriteLine(123_456);
Console.Write("Long:");
Console.WriteLine(123_456_789L);
Console.Write("Float:");
Console.WriteLine(123_456.1234F);
Console.Write("Double:");
Console.WriteLine(123_456.12);
Console.Write("Decimal:");
Console.WriteLine(123_456.12M);
}
#endregion Use Digit Separators
#region Use Binary Literals
private static void BinaryLiterals()
{
Console.WriteLine("=> Use Binary Literals:");
Console.WriteLine("Sixteen: {0}", 0b0001_0000);
Console.WriteLine("Thirty Two: {0}", 0b0010_0000);
Console.WriteLine("Sixty Four: {0}", 0b0100_0000);
}
#endregion Use Binary Literals
}
}
ٱلْـحَـمْـدُ للهِ
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