Thursday, January 23, 2014

What is pointer and why pointers are used in C programs

What is pointer and why pointers are used in C programs <title> <div dir="ltr" style="text-align: left;" trbidi="on"> <span style="font-size: large;">Pointer is the address of an object(i.e a specific memory location). it can refer to different objects at different times. Pointers contain memory addresses as their values.</span><br /> <span style="font-size: large;">pointers are used in C programs for different purposes.</span><br /> <ol style="text-align: left;"><span style="font-size: large;"> </span> <li><span style="font-size: large;">To return more than one value from a function(using pass by reference).</span></li> <span style="font-size: large;"> </span> <li><span style="font-size: large;">To create and process strings.</span></li> <span style="font-size: large;"> </span> <li><span style="font-size: large;">To manipulate the contents of arrays and structures.</span></li> <span style="font-size: large;"> </span> <li><span style="font-size: large;">To construct data structures whose size can grow or shrink dynamically.</span></li> </ol> </div> <div style='clear: both;'></div> </div> <div class='post-footer'> <div class='post-footer-line post-footer-line-1'> <span class='post-author vcard'> Posted by <span class='fn' itemprop='author' itemscope='itemscope' itemtype='http://schema.org/Person'> <span itemprop='name'>Admin</span> </span> </span> <span class='post-timestamp'> at <meta content='http://4everprogramming.blogspot.com/2014/01/what-is-pointer-and-why-pointers-are.html' itemprop='url'/> <a class='timestamp-link' href='https://4everprogramming.blogspot.com/2014/01/what-is-pointer-and-why-pointers-are.html' rel='bookmark' title='permanent link'><abbr class='published' itemprop='datePublished' title='2014-01-23T12:37:00-08:00'>12:37 PM</abbr></a> </span> <span class='post-comment-link'> </span> <span class='post-icons'> <span class='item-control blog-admin pid-1539724667'> <a href='https://www.blogger.com/post-edit.g?blogID=2987092739882673844&postID=7652009036248526646&from=pencil' title='Edit Post'> <img alt='' class='icon-action' height='18' src='https://resources.blogblog.com/img/icon18_edit_allbkg.gif' width='18'/> </a> </span> </span> <div class='post-share-buttons goog-inline-block'> <a class='goog-inline-block share-button sb-email' href='https://www.blogger.com/share-post.g?blogID=2987092739882673844&postID=7652009036248526646&target=email' target='_blank' title='Email This'><span class='share-button-link-text'>Email This</span></a><a class='goog-inline-block share-button sb-blog' href='https://www.blogger.com/share-post.g?blogID=2987092739882673844&postID=7652009036248526646&target=blog' onclick='window.open(this.href, "_blank", "height=270,width=475"); 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