Usage of void

Shazma Batool

4y1.3kC#

What is void actually?

In methods, it can be sort of used as a data type like int, double etc. but cannot be used in the declaration of a variable?

7 Replies

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Md Sarfaraj4y ago
When we use the void keyword, we are able to create methods that return no value.

For more information check out the below link.

Link: https://www.tutorialspoint.com/java/java_methods.htm
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Sam Hobbs4y ago
In this context void means there is either nothing there or it is useless. It does not make sense to allocate a variable that does not exist or is useless.

In this context a method is the same as a function, such as C language functions. Languages have conventions for how values are returned from a function or method. When a function or method returns void, it means there is nothing in the defined location for a return value; anything that is there is useless.
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Jaydeep Patil4y ago
Void indicate the method returns nothing.
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Nitin Sontakke4y ago
Just to put it in another words - as not sure which definition would click you...

Void is NOT a data-type.

In contrast, it is a placeholder to inform compiler that no value of any data-type is being returned by the method.

This is just to make compiler's lexical parsing easier. And nothing to do with programming as such. Kind of contract / protocol to be followed by developer to help compiler's job slightly easy.
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Sachin Singh4y ago
Void keyword cannot assign any memory to the variable and hence it cannot be used for variable declaration.

so it is used as a return type only , just for methods.

For example WriteLine() is a method of Console class which just prints and doesn't return anything, so it's return type is Void.
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Amit Mohanty4y ago
The void keyword indicates that a method returns nothing. When a void method is invoked, it has no result and no variable can be assigned. Void is a return type and it used when method doesn't returns.
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Jignesh Kumar4y ago
when your method do not return any values like int, string, complex object. That time you can use void return type. It means you do not have anything to return.

When you declare any variable means you are storing some value in it. That's the reason you can not use in variable declaration Vaibhav void.
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