{"id":12852,"date":"2024-03-14T16:43:46","date_gmt":"2024-03-14T16:43:46","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-you-search-for-a-specific-character-in-the-c-programming-language\/"},"modified":"2025-08-05T07:51:51","modified_gmt":"2025-08-05T07:51:51","slug":"how-can-you-search-for-a-specific-character-in-the-c-programming-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-you-search-for-a-specific-character-in-the-c-programming-language\/","title":{"rendered":"C strchr: Search Characters in Strings"},"content":{"rendered":"<p>In C language, the strchr function can be used to locate the position of a specified character in a string.<\/p>\n<p>Function prototype:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">char<\/span> *<span class=\"hljs-title function_\">strchr<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">const<\/span> <span class=\"hljs-type\">char<\/span> *s, <span class=\"hljs-type\">int<\/span> c)<\/span>;\r\n<\/code><\/pre>\n<p>Explanation of parameters:<\/p>\n<ol>\n<li>s: the string to be searched<\/li>\n<li>c: the character to be found<\/li>\n<\/ol>\n<p>Return value:<\/p>\n<ol>\n<li>If the specified character is found, return a pointer pointing to that character.<\/li>\n<li>Return NULL if the specified character is not found.<\/li>\n<\/ol>\n<p>Example 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<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\">char<\/span> *ptr = <span class=\"hljs-built_in\">strchr<\/span>(str, <span class=\"hljs-string\">'o'<\/span>);\r\n    \r\n    <span class=\"hljs-keyword\">if<\/span> (ptr != <span class=\"hljs-literal\">NULL<\/span>) {\r\n        <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u627e\u5230\u5b57\u7b26'o'\u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\uff1a%d\\n\"<\/span>, ptr - str);\r\n    } <span class=\"hljs-keyword\">else<\/span> {\r\n        <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u672a\u627e\u5230\u6307\u5b9a\u5b57\u7b26\\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>Output result:<\/p>\n<pre class=\"post-pre\"><code>\u627e\u5230\u5b57\u7b26'o'\u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\uff1a4\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>In C language, the strchr function can be used to locate the position of a specified character in a string. Function prototype: char *strchr(const char *s, int c); Explanation of parameters: s: the string to be searched c: the character to be found Return value: If the specified character is found, return a pointer pointing [&hellip;]<\/p>\n","protected":false},"author":10,"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":[10768,381,16939,16938,276],"class_list":["post-12852","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-string-functions","tag-c-programming","tag-character-search-c","tag-strchr-c","tag-string-manipulation"],"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 strchr: Search Characters in Strings - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use the strchr function in C to find specific characters in strings. 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