{"id":11989,"date":"2024-03-14T15:04:37","date_gmt":"2024-03-14T15:04:37","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-files-be-placed-into-an-array-in-c\/"},"modified":"2025-08-04T19:53:13","modified_gmt":"2025-08-04T19:53:13","slug":"how-can-files-be-placed-into-an-array-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-files-be-placed-into-an-array-in-c\/","title":{"rendered":"C++ File to Array: Read Files into Arrays"},"content":{"rendered":"<p>In C++, you can store files in an array variable by first reading the file contents and then saving them in the array. Here is an example code:<\/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<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;fstream&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;vector&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-function\">std::ifstream <span class=\"hljs-title\">file<\/span><span class=\"hljs-params\">(<span class=\"hljs-string\">\"example.txt\"<\/span>)<\/span><\/span>;\r\n    std::string line;\r\n    std::vector&lt;std::string&gt; lines;\r\n\r\n    <span class=\"hljs-keyword\">if<\/span> (file.<span class=\"hljs-built_in\">is_open<\/span>()) {\r\n        <span class=\"hljs-keyword\">while<\/span> (std::<span class=\"hljs-built_in\">getline<\/span>(file, line)) {\r\n            lines.<span class=\"hljs-built_in\">push_back<\/span>(line);\r\n        }\r\n\r\n        file.<span class=\"hljs-built_in\">close<\/span>();\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5c06\u6587\u4ef6\u5185\u5bb9\u5b58\u50a8\u5230\u6570\u7ec4\u4e2d<\/span>\r\n        <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">const<\/span> <span class=\"hljs-keyword\">auto<\/span>&amp; l : lines) {\r\n            std::cout &lt;&lt; l &lt;&lt; std::endl;\r\n        }\r\n    } <span class=\"hljs-keyword\">else<\/span> {\r\n        std::cout &lt;&lt; <span class=\"hljs-string\">\"Unable to open file\"<\/span> &lt;&lt; std::endl;\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>The code example above opens a file named &#8220;example.txt&#8221;, reads its contents, and stores each line in a vector. Finally, it prints out the file content. Feel free to modify the code to suit your needs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C++, you can store files in an array variable by first reading the file contents and then saving them in the array. Here is an example code: #include &lt;iostream&gt; #include &lt;fstream&gt; #include &lt;vector&gt; int main() { std::ifstream file(&#8220;example.txt&#8221;); std::string line; std::vector&lt;std::string&gt; lines; if (file.is_open()) { while (std::getline(file, line)) { lines.push_back(line); } file.close(); \/\/ \u5c06\u6587\u4ef6\u5185\u5bb9\u5b58\u50a8\u5230\u6570\u7ec4\u4e2d [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[14532,274,380,1148,3699],"class_list":["post-11989","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-array-handling","tag-c","tag-file-i-o","tag-file-reading","tag-vector"],"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>C++ File to Array: Read Files into Arrays - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to read file contents into an array in C++ with easy-to-follow code example. 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