в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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==Composite Struct==

<source lang="csharp">struct StructWithNoMembers
{
}

struct StructWithMembers
{
short s;
int i;
long l;
bool b;
}

struct CompositeStruct
{
StructWithNoMembers a;
StructWithMembers b;
StructWithNoMembers c;
}

class SizeofCustomTypesApp
{
unsafe public static void Main(string[] args)
{
Console.WriteLine("sizeof StructWithNoMembers structure = {0}", sizeof(StructWithNoMembers));
Console.WriteLine("sizeof StructWithMembers structure = {0}",sizeof(StructWithMembers));
Console.WriteLine("sizeof CompositeStruct structure = {0}", sizeof(CompositeStruct));
}
}</source>

==Create A Struct Using Default Constructor==

<source lang="csharp">using System;
public struct Location
{
public int X { get; set; }
public int Y { get; set; }
public Location(int x, int y)
: this()
{
X = x;
Y = y;
}
public override string ToString()
{
return (String.Format("{0}, {1}", X, Y));
}
}
public class Tester
{
static void Main()
{
Location loc1 = new Location(); // no call to the constructor
loc1.X = 75;
loc1.Y = 225;
Console.WriteLine(loc1);
}
}</source>

==Declaration of a struct and use it==

<source lang="csharp">using System;
public struct MyStruct
{
public int MyInt;
public long MyLong;
public string MyString;
}
class MainClass
{
static void Main(string[] args)
{
MyStruct TheStruct;
TheStruct.MyInt = 0;
TheStruct.MyLong = 0;
TheStruct.MyString = "Hello World";
}
}</source>

==Declare a struct==

<source lang="csharp">using System;
struct Point
{
public Point(int x, int y)
{
this.x = x;
this.y = y;
}
public override string ToString()
{
return(String.Format("({0}, {1})", x, y));
}

public int x;
public int y;
}
class MainClass
{
public static void Main()
{
Point start = new Point(5, 5);
Console.WriteLine("Start: {0}", start);
}
}</source>
<pre class=codeResult>Start: (5, 5)</pre>

==Declare the Rectangle struct==

<source lang="csharp">public struct Rectangle
{
// declare the fields
public int Width;
public int Height;
// define a constructor
public Rectangle(int Width, int Height)
{
this.Width = Width;
this.Height = Height;
}
// define the Area() method
public int Area()
{
return Width * Height;
}
}

class MainClass
{
public static void Main()
{
System.Console.WriteLine("Creating a Rectangle instance");
Rectangle myRectangle = new Rectangle(2, 3);
System.Console.WriteLine("myRectangle.Width = " + myRectangle.Width);
System.Console.WriteLine("myRectangle.Height = " + myRectangle.Height);
System.Console.WriteLine("myRectangle.Area() = " + myRectangle.Area());
}
}</source>
<pre class=codeResult>Creating a Rectangle instance
myRectangle.Width = 2
myRectangle.Height = 3
myRectangle.Area() = 6</pre>

==Defining struct==

<source lang="csharp">struct Angle
{
public Angle(int hours, int minutes, int seconds)
{
_Hours = hours;
_Minutes = minutes;
_Seconds = seconds;
}
public int Hours
{
get { return _Hours; }
}
private int _Hours;
public int Minutes
{
get { return _Minutes; }
}
private int _Minutes;
public int Seconds
{
get { return _Seconds; }
}
private int _Seconds;
public Angle Move(int hours, int minutes, int seconds)
{
return new Angle(Hours + hours,Minutes + minutes,Seconds + seconds);
}
}
class Coordinate
{
public Angle Longitude
{
get { return _Longitude; }
set { _Longitude = value; }
}
private Angle _Longitude;
public Angle Latitude
{
get { return _Latitude; }
set { _Latitude = value; }
}
private Angle _Latitude;
}</source>

==Use enum data type in a struct==

<source lang="csharp">using System;
enum EmpType : byte
{
Manager = 10,
Developer = 1,
Contractor = 100,
Programmer = 9
}
struct EMPLOYEE
{
public EmpType title;
public string name;
public short deptID;
public EMPLOYEE(EmpType et, string n, short d)
{
title = et;
name = n;
deptID = d;
}
}
class MainClass
{
public static void Main(string[] args) {
EMPLOYEE fred;
fred.deptID = 40;
fred.name = "Fred";
fred.title = EmpType.Developer;
EMPLOYEE mary = new EMPLOYEE(EmpType.Programmer, "Mary", 10);
}
}</source>

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в 15:31, 26 мая 2010

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