CoolInterview.com - World's Largest Collection of Interview Questions
Home| Ask Questions| About Us| Feedback| Contact Us|
 Interview Questions  
 Our Services  

Get 9,000 Interview Questions & Answers in an eBook.


  • 9500+ Pages
  • 9000 Question & Answers
  • All Tech. Categories
  • 14 MB Content

    Get it now !!



    Send your Resume to 6000 Companies

  • COOLINTERVIEW.COM LANGUAGES C DETAILS



    Question :
    What is a void pointer?


    Answer :
    A void pointer is a C convention for ?a raw address.? The compiler has no idea what type of object a void Pointer ?really points to.? If you write

    int *ip;

    ip points to an int. If you write

    void *p;

    p doesn?t point to a void!

    In C and C++, any time you need a void pointer, you can use another pointer type. For example, if you have a char*, you can pass it to a function that expects a void*. You don?t even need to cast it. In C (but not in C++), you can use a void* any time you need any kind of pointer, without casting. (In C++, you need to cast it).

    A void pointer is used for working with raw memory or for passing a pointer to an unspecified type.
    Some C code operates on raw memory. When C was first invented, character pointers (char *) were used for that. Then people started getting confused about when a character pointer was a string, when it was a character array, and when it was raw memory.

    we can use any data type.

     Posted by: priya    

    Contact Author  Contact Author

    © CoolInterview.com
    Today's Special: Get Free Magazine from SAP now!

    A D V E R T I S E M E N T








    If you have the better answer, then send it to us. We will display your answer after the approval.
    Name :*
    Email Id :*
    Answer :*
    Verification Code Code Image - Please contact webmaster if you have problems seeing this image code Not readable? Load New Code
    Process Verification  Enter the above shown code:*
    Inform me about updated answers to this question

       


    Rate the above answer. Help us to know about the answer.
    Category C Interview Questions
    Rating (5.0) By 2 users
    Added 10/22/2004
    Views 3242
    Rate it!
    Free Offers 300 Free Magazines for you. No credit card required. No Shipping Charges. Absolutely Free for 1 Year.

    Please Note: We keep on updating better answers to this site. Subscribe to our newsletter to get notified when better answer is posted.

    Notify me when better answer is posted!
    Email:

    View ALL C Interview Questions


    Sponsored Links  

    Google Search

    Google

    CoolInterview.com is a part of Vyom Network.
    Copyright ©2003-2009 Vyom Technosoft Pvt. Ltd., All Rights Reserved. Privacy Policy
    Page URL: http://www.coolinterview.com/interview/1008/Default.asp?cachecommand=bypass


    Download Yahoo Messenger | Placement Papers| FREE SMS | ASP .Net Tutorial

    0.72