{"id":17785,"date":"2024-03-15T15:42:32","date_gmt":"2024-03-15T15:42:32","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/"},"modified":"2024-03-21T11:44:19","modified_gmt":"2024-03-21T11:44:19","slug":"how-to-define-dynamic-arrays-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/","title":{"rendered":"How to define dynamic arrays in C++?"},"content":{"rendered":"<p>In C++, dynamic arrays can be implemented by allocating memory using the new keyword.<\/p>\n<p>Here is an example code defining a dynamic array:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;iostream&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n    <span class=\"hljs-type\">int<\/span> size;\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u5927\u5c0f\uff1a\"<\/span>;\r\n    std::cin &gt;&gt; size;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u4f7f\u7528new\u5173\u952e\u5b57\u52a8\u6001\u5206\u914d\u5185\u5b58<\/span>\r\n    <span class=\"hljs-type\">int<\/span>* arr = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-type\">int<\/span>[size];\r\n\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u6570\u7ec4\u5143\u7d20\u7684\u503c\uff1a\"<\/span>;\r\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; size; i++) {\r\n        std::cin &gt;&gt; arr[i];\r\n    }\r\n\r\n    std::cout &lt;&lt; <span class=\"hljs-string\">\"\u6570\u7ec4\u5143\u7d20\u7684\u503c\u4e3a\uff1a\"<\/span>;\r\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; size; i++) {\r\n        std::cout &lt;&lt; arr[i] &lt;&lt; <span class=\"hljs-string\">\" \"<\/span>;\r\n    }\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u91ca\u653e\u5185\u5b58<\/span>\r\n    <span class=\"hljs-keyword\">delete<\/span>[] arr;\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>In the above code, a dynamically allocated integer array of size &#8220;size&#8221; is created using the new keyword. Then, a loop is used to store user input values into the array, and another loop is used to print out the elements of the array. Finally, it is necessary to use the delete[] operator to release the allocated memory in order to prevent memory leaks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C++, dynamic arrays can be implemented by allocating memory using the new keyword. Here is an example code defining a dynamic array: #include &lt;iostream&gt; int main() { int size; std::cout &lt;&lt; &#8220;\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u5927\u5c0f\uff1a&#8221;; std::cin &gt;&gt; size; \/\/ \u4f7f\u7528new\u5173\u952e\u5b57\u52a8\u6001\u5206\u914d\u5185\u5b58 int* arr = new int[size]; std::cout &lt;&lt; &#8220;\u8bf7\u8f93\u5165\u6570\u7ec4\u5143\u7d20\u7684\u503c\uff1a&#8221;; for (int i = 0; i &lt; size; i++) [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-17785","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to define dynamic arrays in C++? - Blog - Silicon Cloud<\/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:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to define dynamic arrays in C++?\" \/>\n<meta property=\"og:description\" content=\"In C++, dynamic arrays can be implemented by allocating memory using the new keyword. Here is an example code defining a dynamic array: #include &lt;iostream&gt; int main() { int size; std::cout &lt;&lt; &quot;\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u5927\u5c0f\uff1a&quot;; std::cin &gt;&gt; size; \/\/ \u4f7f\u7528new\u5173\u952e\u5b57\u52a8\u6001\u5206\u914d\u5185\u5b58 int* arr = new int[size]; std::cout &lt;&lt; &quot;\u8bf7\u8f93\u5165\u6570\u7ec4\u5143\u7d20\u7684\u503c\uff1a&quot;; for (int i = 0; i &lt; size; i++) [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T15:42:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T11:44:19+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin Taylor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Taylor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/\"},\"author\":{\"name\":\"Benjamin Taylor\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/ac801fe9549a25960ce48aa2e0a691c9\"},\"headline\":\"How to define dynamic arrays in C++?\",\"datePublished\":\"2024-03-15T15:42:32+00:00\",\"dateModified\":\"2024-03-21T11:44:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/\"},\"wordCount\":94,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/\",\"name\":\"How to define dynamic arrays in C++? 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Here is an example code defining a dynamic array: #include &lt;iostream&gt; int main() { int size; std::cout &lt;&lt; \"\u8bf7\u8f93\u5165\u6570\u7ec4\u7684\u5927\u5c0f\uff1a\"; std::cin &gt;&gt; size; \/\/ \u4f7f\u7528new\u5173\u952e\u5b57\u52a8\u6001\u5206\u914d\u5185\u5b58 int* arr = new int[size]; std::cout &lt;&lt; \"\u8bf7\u8f93\u5165\u6570\u7ec4\u5143\u7d20\u7684\u503c\uff1a\"; for (int i = 0; i &lt; size; i++) [&hellip;]","og_url":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-15T15:42:32+00:00","article_modified_time":"2024-03-21T11:44:19+00:00","author":"Benjamin Taylor","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"Benjamin Taylor","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/"},"author":{"name":"Benjamin Taylor","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/ac801fe9549a25960ce48aa2e0a691c9"},"headline":"How to define dynamic arrays in C++?","datePublished":"2024-03-15T15:42:32+00:00","dateModified":"2024-03-21T11:44:19+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/"},"wordCount":94,"commentCount":0,"publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/","url":"https:\/\/www.silicloud.com\/blog\/how-to-define-dynamic-arrays-in-c\/","name":"How to define dynamic arrays in C++? 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