{"id":28318,"date":"2022-12-30T03:57:38","date_gmt":"2022-12-29T22:27:38","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-c-reading-input-in-while-loop-closed\/"},"modified":"2022-12-30T03:57:38","modified_gmt":"2022-12-29T22:27:38","slug":"solved-c-reading-input-in-while-loop-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-c-reading-input-in-while-loop-closed\/","title":{"rendered":"[Solved] C reading input in while loop [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-35390318\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"35390318\" data-parentid=\"35383250\" data-score=\"0\" data-position-on-page=\"2\" data-highest-scored=\"0\" data-question-has-accepted-highest-score=\"0\" itemprop=\"suggestedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Well, this piece of code<\/p>\n<pre><code>int c; \nwhile ((c = getchar()) != EOF &amp;&amp; c != '\\n');\n<\/code><\/pre>\n<p>is used to clear the buffer, as mentioned in @napnac&#8217;s answer. It is mainly used instead of <code>fflush (stdin);<\/code>, which is UB. But note that this is successful only if the input buffer happens to contain data ending in a newline. <\/p>\n<p>Otherwise, you can use <code>fflush (stdin);<\/code>, which is not recommended. You can also use the <a rel=\"nofollow noopener\" target=\"_blank\" href=\"http:\/\/linux.die.net\/man\/3\/flushinp\"><code>flushinp<\/code><\/a> function provided by the curses library. It throws away any typeahead that has been typed by the user and has not yet been read by the program<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">2<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved C reading input in while loop [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Well, this piece of code int c; while ((c = getchar()) != EOF &amp;&amp; c != &#8216;\\n&#8217;); is used to clear the buffer, as mentioned in @napnac&#8217;s answer. It is mainly used instead of fflush (stdin);, which is UB. But note that this is successful only if the input buffer happens to contain data &#8230; <a title=\"[Solved] C reading input in while loop [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-c-reading-input-in-while-loop-closed\/\" aria-label=\"More on [Solved] C reading input in while loop [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,1204,5052,652,459],"class_list":["post-28318","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-eof","tag-getchar","tag-int","tag-while-loop"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] C reading input in while loop [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-c-reading-input-in-while-loop-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] C reading input in while loop [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Well, this piece of code int c; while ((c = getchar()) != EOF &amp;&amp; c != &#039;n&#039;); is used to clear the buffer, as mentioned in @napnac&#8217;s answer. It is mainly used instead of fflush (stdin);, which is UB. But note that this is successful only if the input buffer happens to contain data ... 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It is mainly used instead of fflush (stdin);, which is UB. But note that this is successful only if the input buffer happens to contain data ... 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