Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition

5.5. While Repetition Statement

A repetition statement (also called a looping statement or a loop) allows you to specify that an action should be repeated, depending on the value of a condition (called the loop-continuation condition).

As an example of a While statement (sometimes more formally referred to as the While...End While statement), consider a program designed to find the first power of 3 larger than 100 (Fig. 5.4). In line 5, we take advantage of a Visual Basic feature that allows variable initialization to be incorporated into a declaration. When the While statement is entered (line 9), product is 3. Variable product is repeatedly multiplied by 3 (line 11), taking on the values 3, 9, 27, 81 and 243, successively. When product becomes ...