'out'? C#? ????, ?? ???? ???? ??? ???? ? ?????. out ????? ???? ??? ??? ??? ??? ???? ?? ????? ???? ??? ????. ??? ???? ???? ??? ???? ??? ?? ??? ???? ?? ???? ?? ???? ?? out ?? ??? ??? ?? ???? ???. ?? ?? ????? ???? ??? ? ??? ???? ?? ?? ?????.

??? ??? ??:

out ????? ???? ???? ???? ?? ??? ??? ????.

Method_name(out data_type variable_name);

??? Method_name? ???? ??? ??? ?? ????, 'out'? ???? ??? ??? out ?????? ???? ? ???? ?????, data_type? ??? ?? ??? ??? ? ? ???, Variable_name? ???? ??? ?? ?????.

???? ???? ??? ??? ????.

access_specifier return_type Method_name(out data_type variable_name);

???? access_specifier? public ?? private? ?? C#?? ???? 5?? ??? ??? ? ??? ??? ???? ? ????. ?? ?? return_type? ? ???? ???? ??? ???? ? ?? ??? ??? 'out' ???? ??? ???.

C#?? 'out' ????? ??? ??????

C#?? 'out' ???? 'ref' ? 'in' ???? ???? ?????. 'out' ????? 'ref' ????? ???? 'out' ???? ??? ???? ???? ?? ???? ??? ??? ???? ???? ?? ???? 'out' ???? ??? ??? ? ??? ????. 'out' ????? ??? ????? ?? ??? ???? ?? 'ref' ???? ??? ???? ???? ?? ?????? ???. ????? ??? 'out' ????? ??? ?? ???? ???? ? ????.

?? #1

??:

using System;
namespace ConsoleApp4
{
public class Program
{
public static void Main(string[] args)
{
//inline declaration of 'out' parameter
Display(out int num);
Console.WriteLine("Value of variable 'num': {0}", num);
Console.ReadLine();
}
public static void Display(out int a)
{
//need to assign value
a = 10;
a += a;
}
}
}

??:

• ?? 'out'? 'in' ???? ???? 'out' ???? ?? ??? ??? ??? ??? ? ??? 'in' ???? ?? ??? ??? ??? ??? ? ??? ????.
• ????? Display(out x, out y);
? ?? 'out' ????? ? ? ?? ?? ? ????.
• 'out' ????? ????? ???? ??? ?? ? ?? ????? 'out' ???? ????? ???? ???. ???, ??? ??? ???? 'out' ????? ??? ??? ??? ??? ????.
• 'out' ????? ???? ?? ??? ????? ???? ? ?? ??? ?????? ?? ??? ?? ? ?? ??? ???? ??? ?? ??? ???????. out? ???? ???? ????? ?? ?? ??? ? ?? ??? ???? ??? ????? ?? ?? ??? ?? ?? ? ??? ????. ??? ???? ?? ???? ?? ???? ?? 'out' ????? ???? ?? ?? ????? ???.
• 'async' ???? ???? ???? ??? ????? 'out' ????? ??? ? ?? 'iterator' ????? 'out' ????? ??? ? ?? ??? ?? ??? ????? 'out' ????? ??? ? ????. '??? ??' ?? '??? ??' ??? ?????. ??? ??? ???? ???? 'out' ????? ??? ? ????.
• 'out' ????? ?? ????? ????? ???? ?? ?? ??? ???? ??? ? ????. ?? ?? 'out' ?? ??? C#? ??? ??? ??? ?? TryParse() ????? ?????. TryParse() ???? ?? ?? ??? ???? ?? ?? ???? ?? ? ??? 'out' ?? ??? ?????.

?? #2

??:

using System;
namespace ConsoleApp4
{
public class Program
{
public static void Main(string[] args)
{
string str = "123456";
int num;
//if ‘canParse’ is true; the result of conversion will be stored in ‘num’
bool canParse = Int32.TryParse(str, out num);
if (canParse)
Console.WriteLine(num);
else
Console.WriteLine("Could not be parsed.");
Console.ReadLine();
}
}
}

??:

C# ?? ????? ?

??? C# Out ????? ????.

?? #1

???? ??? ?? 'out' ????? ???? ?? ? ? ?? ???? ?? ?? ?????.

??:

using System;
namespace ConsoleApp4
{
public class Program
{
public static void Main()
{
//declaring variables without assigning values
float area, perimeter;
//passing multiple variables to a method using 'out' keyword
Calculate(5, 10, out area, out perimeter);
//displaying the result
Console.WriteLine("The area of rectangle is: {0}", area);
Console.WriteLine("The perimeter of rectangle is: {0}", perimeter);
Console.ReadLine();
}
//method taking length & breadth & it will return area and perimeter of rectangle
public static void Calculate(int length, int breadth, out float area, out float
perimeter)
{
area = length * breadth;
perimeter = 2 * (length + breadth);
}
}
}

??:

?? #2

'out' ????? ??? ?? ??

??:

using System;
namespace ConsoleApp4
{
public class Program
{
public static void Main()
{
//in-line declaration of variables without assigning values
Calculate(out int length, out int breadth, out float area);
//displaying the values of length, breadth, and area
Console.WriteLine("Length of rectangle: " + length);
Console.WriteLine("Breadth of rectangle: " + breadth);
Console.WriteLine("Area of rectangle: " + area);
Console.ReadLine();
}
//method taking 'out' parameters and it returns multiple values
public static void Calculate(out int l, out int b, out float a)
{
l = 30;
b = 40;
a = l * b;
}
}
}

??:

??

C#? 'out' ????? ???? ???? ???? ???? ??? ??? ? ????. 'out' ????? ???? ??? ???? ???? ?? ???? ??? ????. ??? ???? ?? ???? ?? out ?? ??? ?? ???? ???.

? ??? C# ?? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!