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the definitions are<br />
<br />

<pre><code id="code-20-35439908-1">#ifdef STDC 
   typedef void const *voidpc; 
   typedef void FAR   *voidpf; 
   typedef void       *voidp; 
#else 
   typedef Byte const *voidpc; 
   typedef Byte FAR   *voidpf; 
   typedef Byte       *voidp; 
#endif</code></pre>
<br />
Sara 
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the definitions are



#ifdef STDC 
   typedef void const *voidpc; 
   typedef void FAR   *voidpf; 
   typedef void       *voidp; 
#else 
   typedef Byte const *voidpc; 
   typedef Byte FAR   *voidpf; 
   typedef Byte       *voidp; 
#endif


Sara

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<div class="content wysiwyg-content">
Hello all.<br />
<br />
I want to download a zip file on the iPhone and unzip it straight from the downloaded data. I'm writing in Objective C but the &quot;library&quot; I'm using is minizip, which is written in standard C. <br />
<br />
This library makes use of the type unzFile, which is a typedef of voidp.<br />
Also at a certain point it uses a filestream which is of the type voidpf.<br />
<br />
Can anyone explain to me what these datatypes are? Are they typedefs for void pointers or something? <br />
<br />
Thanks in advance.
</div>
</div>


Hello all.

I want to download a zip file on the iPhone and unzip it straight from the downloaded data. I'm writing in Objective C but the "library" I'm using is minizip, which is written in standard C. 

This library makes use of the type unzFile, which is a typedef of voidp.
Also at a certain point it uses a filestream which is of the type voidpf.

Can anyone explain to me what these datatypes are? Are they typedefs for void pointers or something? 

Thanks in advance.

What is the voidp datatype?

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.