Is void a data type in c?

Answer 1

what is void data type

Void is an empty data type normally used as a return type in C/C++, C#, Java functions/methods to declare that no value will be return by the function.

The another use of void is to declare the pointer in C/C++ whe It is not sure that what data type will be addressed by the pointer.

eg:

void *p;

Here p can hold the address of int or float or char or long int or double.

Answer 2

Void is not relay a data type as there is no size of storage associated with it where as char, int, long, float etc have a specific size (how many bytes are required to store the variable in).

When it comes to pointers void is the universal pointer.

When void is used as a function argument in a function prototype.

void foo(void)

The first void means that the function does not return a value.

The second void means that there are no function arguments for the function.

This should not be confused with.

void* bar(void *)

Bar returns a pointer of type void and receives an argument of a void pointer.

Answer 3

as function data type: no value returned (eg: void exit ())

as function parameter: no parameters (eg: getpid (void))

as pointer: generic pointer (void *genptr)

Answer 4

void is not a data type, void means empty. We use void when declaring a function:

void getd();

now getd() function will not return any value.