Introduction to Iteration Control Structures

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The basic attribute of an iteration control structure is to be able to repeat some lines of code. The visual display of iteration creates a circular loop pattern when flowcharted, thus the word "loop" is associated with iteration control structures. Iteration can be accomplished with test before loops, counting loops, and test after loops. A question using Boolean concepts usually controls how long the loop will execute.

We have mentioned that the while control structure belongs to the iteration category and is a test before loop.

Example 10.2: while control structure

counter = 0; while (counter  <  5)   {   cout « "\nI love computers!";   counter ++;   }