{"id":20353,"date":"2024-03-15T20:19:47","date_gmt":"2024-03-15T20:19:47","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-compare-strings-in-c-language\/"},"modified":"2024-03-21T17:53:01","modified_gmt":"2024-03-21T17:53:01","slug":"how-to-compare-strings-in-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-compare-strings-in-c-language\/","title":{"rendered":"How to compare strings in C language?"},"content":{"rendered":"<p>In C language, you can use the strcmp() function to compare two strings.<\/p>\n<p>The strcmp() function takes two parameters, which are the two strings to be compared. It returns an integer value indicating the comparison result of the two strings. The specific comparison rules are as follows:<\/p>\n<ol>\n<li>If the two strings are equal, the return value is 0.<\/li>\n<li>Return a positive integer if the first string is greater than the second string.<\/li>\n<li>If the first string is less than the second string, return a negative integer.<\/li>\n<\/ol>\n<p>Here is an example:<\/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> str1[<span class=\"hljs-number\">20<\/span>] = <span class=\"hljs-string\">\"Hello\"<\/span>;\r\n   <span class=\"hljs-type\">char<\/span> str2[<span class=\"hljs-number\">20<\/span>] = <span class=\"hljs-string\">\"World\"<\/span>;\r\n   <span class=\"hljs-type\">int<\/span> result;\r\n   \r\n   result = <span class=\"hljs-built_in\">strcmp<\/span>(str1, str2);\r\n   \r\n   <span class=\"hljs-keyword\">if<\/span>(result == <span class=\"hljs-number\">0<\/span>) {\r\n      <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u4e24\u4e2a\u5b57\u7b26\u4e32\u76f8\u7b49\\n\"<\/span>);\r\n   }\r\n   <span class=\"hljs-keyword\">else<\/span> <span class=\"hljs-keyword\">if<\/span>(result &lt; <span class=\"hljs-number\">0<\/span>) {\r\n      <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u5c0f\u4e8e\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\\n\"<\/span>);\r\n   }\r\n   <span class=\"hljs-keyword\">else<\/span> {\r\n      <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u5927\u4e8e\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\\n\"<\/span>);\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 output result is:<\/p>\n<pre class=\"post-pre\"><code>\u7b2c\u4e00\u4e2a\u5b57\u7b26\u4e32\u5c0f\u4e8e\u7b2c\u4e8c\u4e2a\u5b57\u7b26\u4e32\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can use the strcmp() function to compare two strings. The strcmp() function takes two parameters, which are the two strings to be compared. It returns an integer value indicating the comparison result of the two strings. The specific comparison rules are as follows: If the two strings are equal, the return [&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-20353","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 compare strings 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-compare-strings-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 compare strings in C language?\" \/>\n<meta property=\"og:description\" content=\"In C language, you can use the strcmp() function to compare two strings. 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