{"id":27956,"date":"2024-03-16T09:30:53","date_gmt":"2024-03-16T09:30:53","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-calculate-the-length-of-a-c-language-string\/"},"modified":"2024-03-22T12:17:19","modified_gmt":"2024-03-22T12:17:19","slug":"how-to-calculate-the-length-of-a-c-language-string","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-calculate-the-length-of-a-c-language-string\/","title":{"rendered":"How to calculate the length of a C language string?"},"content":{"rendered":"<p>In C language, you can utilize the string library function strlen() to calculate the length of a string.<\/p>\n<p>The prototype of the strlen() 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> *str)<\/span>;\r\n<\/code><\/pre>\n<p>The parameter &#8216;str&#8217; is a pointer to a null-terminated string. The return value is an integer of type size_t, indicating the length of the string (excluding the null character).<\/p>\n<p>Here is an example that shows how to calculate the length of a string using the strlen() function:<\/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-string\">\"Hello, world!\"<\/span>;\r\n    <span class=\"hljs-type\">size_t<\/span> length = <span class=\"hljs-built_in\">strlen<\/span>(str);\r\n    \r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"Length of the string is: %zu\\n\"<\/span>, length);\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 output result is:<\/p>\n<pre class=\"post-pre\"><code>Length of the string is: 13\r\n<\/code><\/pre>\n<p>Before using the strlen() function, make sure to include the <string.h> header file.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can utilize the string library function strlen() to calculate the length of a string. The prototype of the strlen() function is as follows: size_t strlen(const char *str); The parameter &#8216;str&#8217; is a pointer to a null-terminated string. The return value is an integer of type size_t, indicating the length of the [&hellip;]<\/p>\n","protected":false},"author":9,"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-27956","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 calculate the length of a C language string? - 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-calculate-the-length-of-a-c-language-string\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to calculate the length of a C language string?\" \/>\n<meta property=\"og:description\" content=\"In C language, you can utilize the string library function strlen() to calculate the length of a string. 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