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In this lecture, you will learn about the void function here.

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So in some cases you will need to indicate that the function does not have parameters or will not return

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a value.

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So in both cases you can use the keyword void here.

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So let's create an example application about void and then continue our lecture.

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So first void, this function will return a void here.

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So let's for example, let's print a message with this void function with void parameter here, void

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message void here.

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And then.

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Here.

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Let's print some value.

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For example.

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No inputs.

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No.

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No return value.

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Value here.

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And then, as you can see, we will not return any value from it because this is a void function and

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this will give us an error.

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So in void functions, you cannot return a value.

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So this functions in this function has only purpose is to print message on the console here as you can

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see here.

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So let's write our main function.

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So as you know, main our main functions that returns something returns integer one or zero.

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You can return ten.

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But usually that does not happen here.

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Integer void integer main function.

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And then let's call our print message a message function.

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As you can see here, print the message function.

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So now we can run our application, compile our application and run and let's see what our output is.

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So let's run our application.

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And as you can see, no inputs.

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No return value.

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So the use of void in the parameter list is optional, so you cannot use it as well.

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So an empty pair of parentheses is acceptable and preferable.

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So you don't have to do this all the time.

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It's preferable to just leave it empty.

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You don't need to add void function here, so avoid the keyboard here.

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So we will make this empty.

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As you can see here, I did this on purpose to show you why, to do this and not so.

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And this is the only way to indicate that the function returns no value other than returning void.

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So note that the void is not really a type because you cannot create a void variable.

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So it is the absence of a type.

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As you will find out in the next lecture, you can create a pointers of the type void, but you will

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not able to use the memory that such pointers point to without casting to a tied pointer.

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So to use the memory, you have to decide the type of the data that that the memory holds.

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So that's it about the void function in this lecture.

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But later on this course you will learn more about the void and void functions here.

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So see you in the next lecture.