while Loop in C#

The while statement conditionally executes an embedded statement zero or more times.

while-statement:
while   (   boolean-expression   )   embedded-statement


A while statement is executed as follows:

  • The boolean-expression is evaluated.
  • If the boolean expression yields true, control is transferred to the embedded statement. When and if control reaches the end point of the embedded statement (possibly from execution of a continue statement), control is transferred to the beginning of the while statement. 
  • If the boolean expression yields false, control is transferred to the end point of the while  statement. 

Within the embedded statement of a while statement, a break statement may be used to transfer control to the end point of the while statement (thus ending iteration of the embedded statement), and a continue statement may be used to transfer control to the end point of the embedded statement (thus performing another iteration of the while statement).
The embedded statement of a while statement is reachable if the while statement is reachable and the boolean expression does not have the constant value false.

The end point of a while statement is reachable if at least one of the following is true:
  • The while statement contains a reachable break statement that exits the while statement.
  • The while statement is reachable and the boolean expression does not have the constant value true.

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