C# For Beginners Lesson 14 While Repetition Structure

Executes a statement until a specified condition is false.

while (expression)
   statement

Arguments

expression

Required. A Boolean expression checked before each iteration of the loop. If expression is true, the loop is executed. If expression is false, the loop is terminated.

statement

Required. Statement to be executed if expression is true. Can be a compound statement.

Remarks

The while statement checks expression before a loop is first executed. If expression is false at this time, the loop is never executed.

Example

The following example illustrates the use of the while statement.

function BreakTest(breakpoint){
   var i = 0;
   while (i < 100) {
      if (i == breakpoint)
         break;
      i++;
   }
   return(i);
}