{"id":6175,"date":"2024-03-14T03:56:50","date_gmt":"2024-03-14T03:56:50","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-calculate-the-factorial-of-an-integer-n-in-the-c-language\/"},"modified":"2025-08-02T00:19:54","modified_gmt":"2025-08-02T00:19:54","slug":"how-to-calculate-the-factorial-of-an-integer-n-in-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-calculate-the-factorial-of-an-integer-n-in-the-c-language\/","title":{"rendered":"Calculate Factorial in C"},"content":{"rendered":"<p>To calculate the factorial of an integer n, you can use a loop structure. Here is an example of C code to calculate the factorial of an integer n:<\/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    <span class=\"hljs-type\">int<\/span> n, i;\r\n    <span class=\"hljs-type\">long<\/span> <span class=\"hljs-type\">long<\/span> factorial = <span class=\"hljs-number\">1<\/span>;\r\n\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u8bf7\u8f93\u5165\u4e00\u4e2a\u6574\u6570\uff1a\"<\/span>);\r\n    <span class=\"hljs-built_in\">scanf<\/span>(<span class=\"hljs-string\">\"%d\"<\/span>, &amp;n);\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u8ba1\u7b97\u9636\u4e58<\/span>\r\n    <span class=\"hljs-keyword\">for<\/span> (i = <span class=\"hljs-number\">1<\/span>; i &lt;= n; i++) {\r\n        factorial *= i;\r\n    }\r\n\r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"%d \u7684\u9636\u4e58\u4e3a %lld\\n\"<\/span>, n, factorial);\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 this example, the user is required to input an integer n, then utilize a loop structure to calculate the factorial of n and print out the result. It is important to note that due to the potentially large size of the factorial result, a long long data type should be used to store the result.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To calculate the factorial of an integer n, you can use a loop structure. Here is an example of C code to calculate the factorial of an integer n: #include &lt;stdio.h&gt; int main() { int n, i; long long factorial = 1; printf(&#8220;\u8bf7\u8f93\u5165\u4e00\u4e2a\u6574\u6570\uff1a&#8221;); scanf(&#8220;%d&#8221;, &amp;n); \/\/ \u8ba1\u7b97\u9636\u4e58 for (i = 1; i &lt;= n; i++) [&hellip;]<\/p>\n","protected":false},"author":14,"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":[704,381,7275,7297,7296],"class_list":["post-6175","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-code-examples","tag-c-programming","tag-factorial-calculation","tag-mathematical-operations-in-c","tag-programming-algorithms"],"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>Calculate Factorial in C - 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