The void Type

The void Type

The void type specifies that no value is available. It is used in three kinds of
situations:
Types and Description
1 Function returns as void
There are various functions in C which do not return any value or you
can say they return void. A function with no return value has the return
type as void. For example, void exit (int status);

2 Function arguments as void
There are various functions in C which do not accept any parameter. A
function with no parameter can accept a void. For example, int
rand(void);

3 Pointers to void
A pointer of type void * represents the address of an object, but not its
type. For example, a memory allocation function void *malloc(size_t
size); returns a pointer to void which can be casted to any data type.