{"id":22974,"date":"2022-11-22T20:32:11","date_gmt":"2022-11-22T15:02:11","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-why-is-uri-online-always-giving-me-presentation-error\/"},"modified":"2022-11-22T20:32:11","modified_gmt":"2022-11-22T15:02:11","slug":"solved-why-is-uri-online-always-giving-me-presentation-error","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-why-is-uri-online-always-giving-me-presentation-error\/","title":{"rendered":"[Solved] Why is URI Online always giving me \u201cPresentation Error\u201d"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-49618726\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"49618726\" data-parentid=\"49617043\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" 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>You misunderstood how <code>printf<\/code> works. It does not concatenate all the stuff you throw into it like you&#8217;re used to from <code>std::cout &lt;&lt; \u2026 &lt;&lt; \u2026;<\/code> but instead mostly prints the first argument, the format string. The latter arguments only come into play when the format string requests them, as you do with the <code>%0.4f<\/code> for the second argument. However, the third is unused. You could fix it like this:<\/p>\n<pre><code>printf(\"A=%0.4f%s\", a, \"\\n\");\n<\/code><\/pre>\n<p>Or, more idiomatically, like this:<\/p>\n<pre><code>printf(\"A=%0.4f\\n\", a);\n<\/code><\/pre>\n<p>By the way, at least my gcc warns me:<\/p>\n<blockquote>\n<p>main.c: In function \u2018main\u2019:<br \/>\n  main.c:\u2026: warning: too many arguments for format [-Wformat-extra-args]<br \/>\n    printf (&#8220;A=%0.4f&#8221;, a, &#8220;\\n&#8221;);<\/p>\n<\/blockquote><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Why is URI Online always giving me \u201cPresentation Error\u201d <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] You misunderstood how printf works. It does not concatenate all the stuff you throw into it like you&#8217;re used to from std::cout &lt;&lt; \u2026 &lt;&lt; \u2026; but instead mostly prints the first argument, the format string. The latter arguments only come into play when the format string requests them, as you do with the &#8230; <a title=\"[Solved] Why is URI Online always giving me \u201cPresentation Error\u201d\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-why-is-uri-online-always-giving-me-presentation-error\/\" aria-label=\"More on [Solved] Why is URI Online always giving me \u201cPresentation Error\u201d\">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":[324,584],"class_list":["post-22974","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-printf"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Why is URI Online always giving me \u201cPresentation Error\u201d - 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-why-is-uri-online-always-giving-me-presentation-error\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Why is URI Online always giving me \u201cPresentation Error\u201d - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You misunderstood how printf works. It does not concatenate all the stuff you throw into it like you&#8217;re used to from std::cout &lt;&lt; \u2026 &lt;&lt; \u2026; but instead mostly prints the first argument, the format string. The latter arguments only come into play when the format string requests them, as you do with the ... 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It does not concatenate all the stuff you throw into it like you&#8217;re used to from std::cout &lt;&lt; \u2026 &lt;&lt; \u2026; but instead mostly prints the first argument, the format string. The latter arguments only come into play when the format string requests them, as you do with the ... 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