{"id":24471,"date":"2022-12-03T05:33:02","date_gmt":"2022-12-03T00:03:02","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-c-how-to-print-union-name-integer-closed\/"},"modified":"2022-12-03T05:33:02","modified_gmt":"2022-12-03T00:03:02","slug":"solved-c-how-to-print-union-name-integer-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-c-how-to-print-union-name-integer-closed\/","title":{"rendered":"[Solved] C++ how to print union name integer [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-31224846\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"31224846\" data-parentid=\"31224789\" data-score=\"1\" 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>As already mentioned, you cannot somehow &#8220;build&#8221; some string at run time and use it as variable name. This is a compile time mechanism, and even if this was a compile time problem, it would be a bad idea.<\/p>\n<p>You most likely want<\/p>\n<pre><code>std::vector&lt;int&gt; nx(someLength);\nstd::vector&lt;int&gt; ny(someLenght);\n\nint value = 5;\ncerr &lt;&lt; nx[value] &lt;&lt; ny[value] &lt;&lt; endl;\n<\/code><\/pre>\n<p>instead. (Or the same thing with <code>std::array&lt;int, someLength&gt; nx{}<\/code> if <code>someLength<\/code> is known at compile time and not big.)<\/p>\n<\/p><\/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 C++ how to print union name integer [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] As already mentioned, you cannot somehow &#8220;build&#8221; some string at run time and use it as variable name. This is a compile time mechanism, and even if this was a compile time problem, it would be a bad idea. You most likely want std::vector&lt;int&gt; nx(someLength); std::vector&lt;int&gt; ny(someLenght); int value = 5; cerr &lt;&lt; nx[value] &#8230; <a title=\"[Solved] C++ how to print union name integer [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-c-how-to-print-union-name-integer-closed\/\" aria-label=\"More on [Solved] C++ how to print union name integer [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],"class_list":["post-24471","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] C++ how to print union name integer [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-how-to-print-union-name-integer-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] C++ how to print union name integer [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] As already mentioned, you cannot somehow &#8220;build&#8221; some string at run time and use it as variable name. This is a compile time mechanism, and even if this was a compile time problem, it would be a bad idea. You most likely want std::vector&lt;int&gt; nx(someLength); std::vector&lt;int&gt; ny(someLenght); int value = 5; cerr &lt;&lt; nx[value] ... 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This is a compile time mechanism, and even if this was a compile time problem, it would be a bad idea. You most likely want std::vector&lt;int&gt; nx(someLength); std::vector&lt;int&gt; ny(someLenght); int value = 5; cerr &lt;&lt; nx[value] ... 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