C Primer Plus®, Third Edition

Chapter Summary

The main topic of this chapter has been program control. C offers you many aids for structuring your programs. The while and the for statements provide entry-condition loops. The for statements are particularly suited for loops that involve initialization and updating. The comma operator enables you to initialize and update more than one variable in a for loop. For the rare occasion when an exit-condition loop is needed, C has the do while statement.

All these loops use a test condition to determine whether another loop cycle is to be executed. In general, the loop continues if the test expression evaluates to a nonzero value, and terminates otherwise. Often, the test condition is a relational expression, which is an expression ...