C# do...while loop
UnlikeforandwhileLoops test the loop condition at the top of the loop.do...whileThe loop checks its condition at the bottom of the loop.
do...whileThe loop is similar to the while loop, but the do...while loop ensures that the loop is executed at least once.
Syntax
In C#do...whileThe syntax of loops:
do
{
statement(s);
}while( condition );
Note that the conditional expression appears at the bottom of the loop, so the statement(s) in the loop are executed at least once before the condition is tested.
If the condition is true, the control flow jumps back to the do above, and then re-executes the statement(s) in the loop. This process repeats continuously until the given condition becomes false.
Flowchart
Example
Example
using System;
namespace Loops
{
class Program
{
static void Main(string[] args)
{
/* local variable definition */
int a = 10;
/* do loop execution */
do
{
Console.WriteLine("Value of a: {0}", a);
a = a + 1;
} while (a < 20);
Console.ReadLine();
}
}
}
namespace Loops
{
class Program
{
static void Main(string[] args)
{
/* local variable definition */
int a = 10;
/* do loop execution */
do
{
Console.WriteLine("Value of a: {0}", a);
a = a + 1;
} while (a < 20);
Console.ReadLine();
}
}
}
When the above code is compiled and executed, it produces the following results:
a 的值： 10 a 的值： 11 a 的值： 12 a 的值： 13 a 的值： 14 a 的值： 15 a 的值： 16 a 的值： 17 a 的值： 18 a 的值： 19other extensions