{"id":8380,"date":"2024-03-14T08:01:12","date_gmt":"2024-03-14T08:01:12","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-read-data-from-multiple-files-in-c-language\/"},"modified":"2025-08-03T04:06:13","modified_gmt":"2025-08-03T04:06:13","slug":"how-to-read-data-from-multiple-files-in-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-read-data-from-multiple-files-in-c-language\/","title":{"rendered":"Read Multiple Files in C: Complete Guide"},"content":{"rendered":"<p>In C language, you can use file pointers and loops to read data from multiple files. Here is a simple example code demonstrating how to read data from multiple files.<\/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\r\n<span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">()<\/span> {\r\n    FILE *file;\r\n    <span class=\"hljs-type\">char<\/span> filename[<span class=\"hljs-number\">100<\/span>];\r\n    <span class=\"hljs-type\">char<\/span> data[<span class=\"hljs-number\">100<\/span>];\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u6587\u4ef6\u540d\u5217\u8868<\/span>\r\n    <span class=\"hljs-type\">char<\/span> *filenames[] = {<span class=\"hljs-string\">\"file1.txt\"<\/span>, <span class=\"hljs-string\">\"file2.txt\"<\/span>, <span class=\"hljs-string\">\"file3.txt\"<\/span>};\r\n\r\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-type\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">3<\/span>; i++) {\r\n        <span class=\"hljs-comment\">\/\/ \u6253\u5f00\u6587\u4ef6<\/span>\r\n        file = fopen(filenames[i], <span class=\"hljs-string\">\"r\"<\/span>);\r\n\r\n        <span class=\"hljs-keyword\">if<\/span> (file == <span class=\"hljs-literal\">NULL<\/span>) {\r\n            <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u65e0\u6cd5\u6253\u5f00\u6587\u4ef6 %s\\n\"<\/span>, filenames[i]);\r\n            <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">1<\/span>;\r\n        }\r\n\r\n        <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u6b63\u5728\u8bfb\u53d6\u6587\u4ef6 %s\\n\"<\/span>, filenames[i]);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8bfb\u53d6\u6587\u4ef6\u6570\u636e<\/span>\r\n        <span class=\"hljs-keyword\">while<\/span> (fgets(data, <span class=\"hljs-keyword\">sizeof<\/span>(data), file) != <span class=\"hljs-literal\">NULL<\/span>) {\r\n            <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"%s\"<\/span>, data);\r\n        }\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u5173\u95ed\u6587\u4ef6<\/span>\r\n        fclose(file);\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>In the code above, a string array called filenames containing multiple file names is first defined. A loop structure is then used to iterate through each file name in the array. Within the loop, the file is opened, its data is read and output to the console, and finally the file is closed. This allows for sequentially reading data from multiple files.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can use file pointers and loops to read data from multiple files. Here is a simple example code demonstrating how to read data from multiple files. #include &lt;stdio.h&gt; int main() { FILE *file; char filename[100]; char data[100]; \/\/ \u6587\u4ef6\u540d\u5217\u8868 char *filenames[] = {&#8220;file1.txt&#8221;, &#8220;file2.txt&#8221;, &#8220;file3.txt&#8221;}; for (int i = 0; i [&hellip;]<\/p>\n","protected":false},"author":6,"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":[381,3721,890,11259,11258],"class_list":["post-8380","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-programming","tag-code-examples","tag-file-handling","tag-file-pointers","tag-multiple-files"],"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>Read Multiple Files in C: Complete Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to read data from multiple files in C programming. 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