{"id":20737,"date":"2024-03-15T20:53:02","date_gmt":"2024-03-15T20:53:02","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/"},"modified":"2024-03-21T18:48:30","modified_gmt":"2024-03-21T18:48:30","slug":"how-to-determine-the-length-of-characters-in-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/","title":{"rendered":"How to determine the length of characters in the C language?"},"content":{"rendered":"<p>In C language, you can use the strlen function to retrieve the length of a string. The prototype of this function is as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">size_t<\/span> <span class=\"hljs-title function_\">strlen<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">const<\/span> <span class=\"hljs-type\">char<\/span> *s)<\/span>;\r\n<\/code><\/pre>\n<p>Among them, the parameter s is a pointer to a null-terminated string. The function returns the length of the string, not including the null terminator. For example, the following code shows how to use the strlen function to get the length of a string:<\/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<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;string.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    <span class=\"hljs-type\">char<\/span> str[<span class=\"hljs-number\">100<\/span>];\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\uff1a\"<\/span>);\r\n    <span class=\"hljs-built_in\">scanf<\/span>(<span class=\"hljs-string\">\"%s\"<\/span>, str);\r\n\r\n    <span class=\"hljs-type\">size_t<\/span> len = <span class=\"hljs-built_in\">strlen<\/span>(str);\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u662f\uff1a%zu\\n\"<\/span>, len);\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>Please note that the strlen function is only suitable for null-terminated strings. If the parameter passed is not null-terminated, its behavior is undefined. To ensure safety, make sure the string is null-terminated before using the strlen function.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can use the strlen function to retrieve the length of a string. The prototype of this function is as follows: size_t strlen(const char *s); Among them, the parameter s is a pointer to a null-terminated string. The function returns the length of the string, not including the null terminator. For example, [&hellip;]<\/p>\n","protected":false},"author":11,"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-20737","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 determine the length of characters in the 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-determine-the-length-of-characters-in-the-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 determine the length of characters in the C language?\" \/>\n<meta property=\"og:description\" content=\"In C language, you can use the strlen function to retrieve the length of a string. The prototype of this function is as follows: size_t strlen(const char *s); Among them, the parameter s is a pointer to a null-terminated string. The function returns the length of the string, not including the null terminator. For example, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-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=\"2024-03-15T20:53:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T18:48:30+00:00\" \/>\n<meta name=\"author\" content=\"Olivia Parker\" \/>\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=\"Olivia Parker\" \/>\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-determine-the-length-of-characters-in-the-c-language\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/\"},\"author\":{\"name\":\"Olivia Parker\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9\"},\"headline\":\"How to determine the length of characters in the C language?\",\"datePublished\":\"2024-03-15T20:53:02+00:00\",\"dateModified\":\"2024-03-21T18:48:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/\"},\"wordCount\":116,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/\",\"name\":\"How to determine the length of characters in the C language? - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\"},\"datePublished\":\"2024-03-15T20:53:02+00:00\",\"dateModified\":\"2024-03-21T18:48:30+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.silicloud.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to determine the length of characters in the C language?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/blog\/\",\"name\":\"Silicon Cloud Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\",\"name\":\"Silicon Cloud Blog\",\"url\":\"https:\/\/www.silicloud.com\/blog\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png\",\"contentUrl\":\"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png\",\"width\":1024,\"height\":1024,\"caption\":\"Silicon Cloud Blog\"},\"image\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\",\"https:\/\/twitter.com\/SiliCloudGlobal\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9\",\"name\":\"Olivia Parker\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/56c66f189ba32a6f9eb50f31a38fe774e2a725c213d4070835ccc51b8fbbc54b?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/56c66f189ba32a6f9eb50f31a38fe774e2a725c213d4070835ccc51b8fbbc54b?s=96&d=mm&r=g\",\"caption\":\"Olivia Parker\"},\"url\":\"https:\/\/www.silicloud.com\/blog\/author\/oliviaparker\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"How to determine the length of characters in the C language? - Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/","og_locale":"en_US","og_type":"article","og_title":"How to determine the length of characters in the C language?","og_description":"In C language, you can use the strlen function to retrieve the length of a string. The prototype of this function is as follows: size_t strlen(const char *s); Among them, the parameter s is a pointer to a null-terminated string. The function returns the length of the string, not including the null terminator. For example, [&hellip;]","og_url":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-15T20:53:02+00:00","article_modified_time":"2024-03-21T18:48:30+00:00","author":"Olivia Parker","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"Olivia Parker","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/"},"author":{"name":"Olivia Parker","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9"},"headline":"How to determine the length of characters in the C language?","datePublished":"2024-03-15T20:53:02+00:00","dateModified":"2024-03-21T18:48:30+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/"},"wordCount":116,"commentCount":0,"publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/","url":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/","name":"How to determine the length of characters in the C language? - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/#website"},"datePublished":"2024-03-15T20:53:02+00:00","dateModified":"2024-03-21T18:48:30+00:00","breadcrumb":{"@id":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/blog\/how-to-determine-the-length-of-characters-in-the-c-language\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.silicloud.com\/blog\/"},{"@type":"ListItem","position":2,"name":"How to determine the length of characters in the C language?"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/blog\/#website","url":"https:\/\/www.silicloud.com\/blog\/","name":"Silicon Cloud Blog","description":"","publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.silicloud.com\/blog\/#organization","name":"Silicon Cloud Blog","url":"https:\/\/www.silicloud.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png","contentUrl":"https:\/\/www.silicloud.com\/blog\/wp-content\/uploads\/2023\/11\/EN-SILICON-Full.png","width":1024,"height":1024,"caption":"Silicon Cloud Blog"},"image":{"@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/SiliCloudGlobal\/","https:\/\/twitter.com\/SiliCloudGlobal"]},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9","name":"Olivia Parker","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/56c66f189ba32a6f9eb50f31a38fe774e2a725c213d4070835ccc51b8fbbc54b?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/56c66f189ba32a6f9eb50f31a38fe774e2a725c213d4070835ccc51b8fbbc54b?s=96&d=mm&r=g","caption":"Olivia Parker"},"url":"https:\/\/www.silicloud.com\/blog\/author\/oliviaparker\/"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/20737","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/comments?post=20737"}],"version-history":[{"count":1,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/20737\/revisions"}],"predecessor-version":[{"id":54556,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/posts\/20737\/revisions\/54556"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/media?parent=20737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/categories?post=20737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/blog\/wp-json\/wp\/v2\/tags?post=20737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}