The void data type is an empty data type that refers to an object that does not have a value of any type. Here are the common uses of void data type. When it is used as a function return type.
void myFunction(int i);
Void return type specifies that the function does not return a value.
When it is used as a function’s parameter list:
Void parameter specifies that the function takes no parameters.
When it is used in the declaration of a pointer variable:
It specifies that the pointer is “universal” and it can point to anything. When we want to access data pointed by a void pointer, first we have to type cast it.