while Loops

• The basic syntax for a while statement is:

  while (logical-expression)
      statement
  

• The statement repeated by the while loop can also be a compound statement:

  while (logical-expression)
  {
      statement
      statement
      ...
  }
  

• In either case, the statement(s) will be repeated as long as the logical expression evaluates to true.
• This means that whatever is being evaluated better change, or you will have an infinite loop.
• Two common ways to end a while loop are with a sentinel or a break statement.

1. A sentinel while loop continues until a specific value is entered (called a "sentinel").
2. A break statement breaks out of the current loop and continues execution from the end of the loop.