questions about "void"...

What does "void" do in a program?

void doesnt do anything, thats why its void

>What does "void" do in a program?
It defines a type that is completely generic (with restrictions), or defines a function that returns no value. In function parameter lists, void means that there are no parameters.

-Prelude

A type that is completly generic? So, I could have a variable of type void? What could it hold?

>So, I could have a variable of type void? What could it hold?
Note that I said with restrictions. You can't declare a variable of type void, it has to be void *, and that makes it a generic pointer which can be converted into any type. Note that the syntax is a nightmare though.

-Prelude

How large is type void?

So... would the following be considered correct syntax?

void *vVariable;

vVariable = new char[256];

-or-

vVariable = &cVariable;

Quote:

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How large is type void?

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all pointers regardless of type store the same data, an address. So all pointers are the same size, that of an int.

>How large is type void?
The size of an int.

>So... would the following be considered correct syntax?
>void *vVariable;
>vVariable = new char[256];
Yes, actually it would. The problem isn't in allocating memory for a void * but in working with one. To allocate memory to a void *, then assign a value to that memory and print requires syntax like this:

Code:

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/* pseudocode */
void *p = new int;
*(int *)p = 27;
cout<< *(int *)p <<"\n";

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or

Code:

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/* pseudocode */
void *p;
int i = 27;
p = &i;
cout<< *(int *)p <<"\n";

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-Prelude