What is void data type and three uses?

Many programming languages need a data type to define the lack of return value to indicate that nothing is being returned. The void data type is typically used in the definition and prototyping of functions to indicate that either nothing is being passed in and/or nothing is being returned.

Is void a value?

In lieu of a data type, void functions use the keyword “void.” A void function performs a task, and then control returns back to the caller–but, it does not return a value. You may or may not use the return statement, as there is no return value.

What is the use of void data?

But there are some functions which do not return value. For them, void data type is necessary. Answer: For a function that does not return anything.

Is void a datatype?

Yes, voidis a type. Whether it’s a datatype depends on how you define that term; the C standard doesn’t. The standard does define the term “object type”. In C99 and earlier; voidis not an object type; in C11]

What is void in C with example?

What is void in C. What is void in C programming? It means “no type”, “no value” or “no parameters”, depending on the context. We use it to indicate that: a function does not return value. a function does not accept parameters. a pointer does not have a specific type and could point to different types.

What is a void pointer?

A void pointer is a pointer that has no associated data type with it. A void pointer can hold address of any type and can be typcasted to any type.

Can void pointers be typecast in C++?

A void pointer can hold address of any type and can be typcasted to any type. // typecasted to any type like int *, char *, .. Note that the above program compiles in C, but doesn’t compile in C++. In C++, we must explicitly typecast return value of malloc to (int *).