{"id":8720,"date":"2024-03-14T08:34:27","date_gmt":"2024-03-14T08:34:27","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-c-language-string-copying-function\/"},"modified":"2025-08-03T08:47:57","modified_gmt":"2025-08-03T08:47:57","slug":"how-to-use-the-c-language-string-copying-function","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-the-c-language-string-copying-function\/","title":{"rendered":"C strcpy Function: Copy Strings in C"},"content":{"rendered":"<p>In C language, you can use the strcpy function to copy strings. The prototype of this function is as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-type\">char<\/span> *<span class=\"hljs-title function_\">strcpy<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">char<\/span> *dest, <span class=\"hljs-type\">const<\/span> <span class=\"hljs-type\">char<\/span> *src)<\/span>;\r\n<\/code><\/pre>\n<p>In this case, dest is a pointer to the target string, and src is a pointer to the source string to be copied.<\/p>\n<p>For example, here is a simple sample program demonstrating how to copy strings using the strcpy 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> src[] = <span class=\"hljs-string\">\"Hello, world!\"<\/span>;\r\n    <span class=\"hljs-type\">char<\/span> dest[<span class=\"hljs-number\">20<\/span>];\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u590d\u5236\u5b57\u7b26\u4e32<\/span>\r\n    <span class=\"hljs-built_in\">strcpy<\/span>(dest, src);\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u6253\u5370\u590d\u5236\u540e\u7684\u5b57\u7b26\u4e32<\/span>\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u6e90\u5b57\u7b26\u4e32: %s\\n\"<\/span>, src);\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u76ee\u6807\u5b57\u7b26\u4e32: %s\\n\"<\/span>, dest);\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, we first defined a source string src and a destination string dest. Then we used the strcpy function to copy src into dest. Finally, we printed out the source and destination strings, showing that the destination string successfully copied the content of the source string.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can use the strcpy function to copy strings. The prototype of this function is as follows: char *strcpy(char *dest, const char *src); In this case, dest is a pointer to the target string, and src is a pointer to the source string to be copied. For example, here is a simple [&hellip;]<\/p>\n","protected":false},"author":13,"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":[698,381,2948,6848,11876],"class_list":["post-8720","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-functions","tag-c-programming","tag-c-strings","tag-strcpy","tag-string-copy"],"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 strcpy Function: Copy Strings in C - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use strcpy() in C to copy strings. 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