{"id":9930,"date":"2024-03-14T10:21:19","date_gmt":"2024-03-14T10:21:19","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/"},"modified":"2024-03-20T16:41:08","modified_gmt":"2024-03-20T16:41:08","slug":"how-to-read-a-line-of-content-from-a-file-in-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/","title":{"rendered":"How to read a line of content from a file in C language?"},"content":{"rendered":"<p>In C language, you can use the standard library function fgets() to read a line of file content. The specific steps are as follows:<\/p>\n<ol>\n<li>Open the file: use the standard library function fopen() to open the file to be read and return a file pointer.<\/li>\n<li>Read a line of content using the fgets() function: Use the fgets() function to read a line of content from an opened file and store the content in a character array.<\/li>\n<li>Process the content that is read: process or output the content that is read.<\/li>\n<li>Close file: Use the fclose() function to close the file.<\/li>\n<\/ol>\n<p>Here is a sample code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;stdio.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">()<\/span> {\r\n    FILE *file;\r\n    <span class=\"hljs-type\">char<\/span> line[<span class=\"hljs-number\">100<\/span>];\r\n\r\n    file = fopen(<span class=\"hljs-string\">\"example.txt\"<\/span>, <span class=\"hljs-string\">\"r\"<\/span>);\r\n    <span class=\"hljs-keyword\">if<\/span> (file == <span class=\"hljs-literal\">NULL<\/span>) {\r\n        <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"Error opening file.\\n\"<\/span>);\r\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">1<\/span>;\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">while<\/span> (fgets(line, <span class=\"hljs-keyword\">sizeof<\/span>(line), file) != <span class=\"hljs-literal\">NULL<\/span>) {\r\n        <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"%s\"<\/span>, line);\r\n    }\r\n\r\n    fclose(file);\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 example, the program opens a file named &#8220;example.txt&#8221; and reads each line of the file using the fgets() function, then prints the content to the console. Finally, it closes the file.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can use the standard library function fgets() to read a line of file content. The specific steps are as follows: Open the file: use the standard library function fopen() to open the file to be read and return a file pointer. Read a line of content using the fgets() function: Use [&hellip;]<\/p>\n","protected":false},"author":7,"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-9930","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 read a line of content from a file in C language? - 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-read-a-line-of-content-from-a-file-in-c-language\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to read a line of content from a file in C language?\" \/>\n<meta property=\"og:description\" content=\"In C language, you can use the standard library function fgets() to read a line of file content. 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Read a line of content using the fgets() function: Use [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/\" \/>\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=\"2024-03-14T10:21:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-20T16:41:08+00:00\" \/>\n<meta name=\"author\" content=\"Sophia Anderson\" \/>\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=\"Sophia Anderson\" \/>\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-read-a-line-of-content-from-a-file-in-c-language\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/\"},\"author\":{\"name\":\"Sophia Anderson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\"},\"headline\":\"How to read a line of content from a file in C language?\",\"datePublished\":\"2024-03-14T10:21:19+00:00\",\"dateModified\":\"2024-03-20T16:41:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/\"},\"wordCount\":153,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-read-a-line-of-content-from-a-file-in-c-language\/\",\"name\":\"How to read a line of content from a file in C language? 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