![]() ![]() There needs to have some action for that Boolean condition.There has to be some Boolean condition that would be evaluated by the loop.In this section, we shall explain the same ideas in more detail.Ī while loop has mainly three parts that need to be understood. A step by step explanation of syntax is also provided in the syntax section. The working of the while loop is quite clear from the flow diagram above. When the Boolean condition is true the statements are executed otherwise it does nothing and loop execution stops. It is the same as the steps described above in the syntax section. The flow diagram above is quite simple and self-explanatory. Let’s understand the flow diagram of a while loop for better clarity. The detailed output will be shown in the example section. Finally, the loop runs until a attains the value 19 and after that, it stops.Now the value of a is 11 which is still less than 20 so the loop runs again. The line a=a+1, adds 1 to a and then the while condition is again checked.Next line prints the current value of a and after that, the next line is executed.Note that currently, the value of a is 10. What it means is that the while loop will run till the value of a is less than 20. While loop starts and the condition is less than 20.A line starting with % is the comment in MATLAB, so we can ignore the same.To better understand the syntax, let’s take an example. ![]() The end is the keyword which suggested the closure of the loop.Statements are the actions that would be executed if the condition or expression is true.An expression is a condition that needs to be true for the while loop to work.In this section, we shall provide syntax of a while loop and then subsequently explain the same in step by step method. But, it is expected that you know the basic data types in MATLAB. And, if you are completely new to programming then as well you need not worry as the discussions in this article is at absolute beginner level and you are not required to have a programming background. We shall talk about the same in the context of MATLAB. If you are familiar with other programming languages then you must be aware of loops such as for loop, if loop, while loop, etc. In this article, we provide basic building blocks of MATLAB and specifically focus on a while loop.
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