void is not a lite-c thing, it's a c/c++ type that is "nothing".

when you are defining functions you use a keyword before functions name to state what it returns.

like by using int in this function definition

int square(int a){
return a*a;
}

you say that , this fucnition will return a int. if your function doesn't return anyting, then you use void. and from what i can remember "function" and "action" are typedefd to void.

However in lite-c as Kombucha said, there is that void pointer thing that can point to any type of data(because all pointers are in same size, in void pointer you dont specify what type of object/type it points to, it can point any type of type/struct.)