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

title
Do while loop

Do while Loop

The do while loop executes a block of code once and until a condition is false. They are a particular case of while loops: they execute a block of code one time and then until the condition is false. 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