Write a while loop in c++

By Alex Allain Loops are used to repeat a block of code. Being able to have your program repeatedly execute a block of code is one of the most basic but useful tasks in programming -- many programs or websites that produce extremely complex output such as a message board are really only executing a single task many times.

Write a while loop in c++

Posted by ProgrammingSkills on November 17, with 1 comment Loops: A type of control structure that repeats a statement or set of statements is known as looping structure.

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It is also known as iterative or repetitive structure. Loops are basically used for two purpose: To execute a statement or number of statements for a specified number of times. For example, a user want to display a specific statement on screen for 10 times.

To use a sequence of values. For example, a user may display a set of whole numbers from 0 to The value of this counter variable increments or decrements each time the body of the loop is executed.

write a while loop in c++

In counter-control loop the number of iterations are known in advance. The iteration of this loop depends on the following factors: This type of loop depends on special value known as sentinel value.

while loop checks whether the condition written in () is true or not. If the condition is true, the statements written in the body of the while loop i.e., inside the braces { } are executed. Then again the condition is checked, and if found true, again the statements in the body of the while loop are executed. One Caveat: before going further, you should understand the concept of C++'s true and false, because it will be necessary when working with loops (the conditions are the same as with if statements). There are three types of loops: for, while, and heartoftexashop.com Each of them has their specific uses. They are all outlined below. You just need to loop from 1 to n. If the value if divid by 2 it's mean you substract and in the oposit way you just add. I didn't test the code but it's should work.

This loop terminates when that specific sentinel value encountered. These types of loops are also known as conditional loop. Here -1 is known as sentinel value that is used for terminate the loop. The number of iteration in sentinel-controlled loop is unknown, it terminates only when user enters the sentinel value.

In while and do-while loops a sentinel value is used. These are as follows: It is most flexible loop. It is most frequently used loop by the programmers.While loop In the C/C++ Language While loop: In the C++ language, while loop is the simplest loop.

It uses when we cannot know about the number of iterations in advance. Summer (Reid-Miller) Loops • Within a method, we can alter the flow of control using either conditionals or loops.

• The loop statements while, do-while, and for . The body of a loop can itself contain a loop; this arrangement is known as nested loops. The inner loop must execute to completion during each time through the outer loop. The inner loop must execute to completion during each time through the outer loop.

In the our previous two chapters we have seen for loop and while loop. C++ do while loop: Unlike for and while loops, heartoftexashop.com loop does not test the condition before going in the loop.

heartoftexashop.com statement allow execution of the loop body once and after the execution of loop body one time, condition will [ ]. You just need to loop from 1 to n. If the value if divid by 2 it's mean you substract and in the oposit way you just add.

Do-while Loops

I didn't test the code but it's should work. In C++,a while loop is a control flow statement that allows code to be executed repeatedly based on a given boolean condition.

The while loop can be thought of as a repeating if statement. Syntax.

How to Write a While Loop: 8 Steps (with Pictures) - wikiHow