Loop Control Structure Presented By Sallar Khan Contents

Loop Control Structure. { Presented By: Sallar Khan

Contents What is Loop ? For Loop While Loop Do While Loop Breaking out of Loop Continue to the next Loop with Conditional Statement Switch Statement

What is Loop ? When a block of code needs to be executed several number of times. In general, statements are executed sequentially: The first statement in a function is executed first, followed by the second, and so on.

. . Loop (Cont. ) A loop statement allows us to execute a statement or group of statements multiple times. Given figure is the general form of a loop statement in most of the programming languages.

For Loop A for loop is a repetition control structure that allows you to efficiently write a loop that needs to execute a specific number of times.

. . For Loop (Example) OUTPUT

While Loop The while loop checks whether the test expression is true or not. If it is true, code/s inside the body of while loop is executed, that is, code/s inside the braces { } are executed. Then again the test expression is checked whether test expression is true or not. This process continues until the test expression becomes false.

. . While Loop(Cont. ) Flow Diagram

. . While Loop (Example) OUTPUT

Do While Loop In C, do. . . while loop is very similar to while loop. Only difference between these two loops is that, in while loops, test expression is checked at first but, in do. . . while loop code is executed at first then the condition is checked. So, the code are executed at least once in do. . . while loops.

. . Do While Loop (Example) OUTPUT

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