Software Philosophy | United States America (US)

Create: 2025-03-10 Update: 2025-07-04 15:02:17

حلقه‌ها در سی‌شارپ

#csharp_for_beginners

در برنامه‌نویسی، حلقه‌ها ابزارهای قدرتمندی برای اجرای مجموعه‌ای از دستورات به‌صورت مکرر هستند. در زبان برنامه‌نویسی C#، انواع مختلفی از حلقه وجود دارد که به برنامه‌نویسان امکان می‌دهد تا وظایف تکراری را با کارایی بالا انجام دهند. در این مقاله، انواع مختلف حلقه‌ها در C# را بررسی کرده و نحوه استفاده از آن‌ها را توضیح خواهیم داد.

حلقه for
حلقه for معمولاً زمانی استفاده می‌شود که تعداد تکرارها مشخص باشد. این حلقه شامل سه بخش اصلی است:
۱. مقداردهی اولیه
۲. شرط ادامه حلقه
۳. افزایش یا کاهش مقدار متغیر کنترلی

مثال:

for (int i = 0; i < 5; i++)
{
   ; ("مقدار i: " + i)Console.WriteLine
}

حلقه while
حلقه while معمولاً زمانی استفاده می‌شود که تعداد تکرارها از قبل مشخص نباشد و اجرای حلقه به یک شرط وابسته باشد.

مثال:

int i = 0;
while (i < 5)
{
    ;("مقدار i: " + i)Console.WriteLine
    i++;
}

این حلقه نیز مانند for مقدار i را از صفر تا ۴ نمایش می‌دهد، اما شرط در ابتدای حلقه بررسی می‌شود.

حلقه do-while
حلقه do-while مشابه while است، با این تفاوت که شرط در انتهای حلقه بررسی می‌شود. بنابراین، بدنه‌ی حلقه حداقل یک بار اجرا خواهد شد.

مثال:

int i = 0;
do
{
    ;("مقدار i: " + i)Console.WriteLine
    i++;
} while (i < 5);

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for (int i = 0; i < 5; i++)
{
   ; ("مقدار i: " + i)Console.WriteLine
}

int i = 0;
while (i < 5)
{
    ;("مقدار i: " + i)Console.WriteLine
    i++;
}

int i = 0;
do
{
    ;("مقدار i: " + i)Console.WriteLine
    i++;
} while (i < 5);

Docs

Iteration statements -for, foreach, do, and while - C# reference

C# iteration statements (for, foreach, do, and while) repeatedly execute a block of code. You use those statements to create loops or iterate through a collection.

hottg.com/SoftwarePhilosophy/2275

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حلقه‌ها در سی‌شارپ

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