freeCodeCamp/guide/english/csharp/do-while-loop/index.md

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Do while loop

Do while Loop

The do while loop executes a block of code atleast once and until a condition is false. It is a particular case of while loop in which the code is executed atleast once irrespective of the while condition. A common use of do while loops are input checks.

Example

do
{
    //execute code block


} while(boolean expression);


string input = "";
do
{
    Console.WriteLine("Type A to continue: ");
    input = Console.ReadLine();
} while(input != "A");

Console.WriteLine("Bye!");

Output:

> Type A to continue: b
> Type A to continue: g
> Type A to continue: A
> Bye!

More Information:

• Microsoft C# - do
• Dot Net Perls - do