{"id":19983,"date":"2024-03-15T19:47:44","date_gmt":"2024-03-15T19:47:44","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-call-a-recursive-function-in-the-c-language\/"},"modified":"2024-03-21T17:00:14","modified_gmt":"2024-03-21T17:00:14","slug":"how-to-call-a-recursive-function-in-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-call-a-recursive-function-in-the-c-language\/","title":{"rendered":"How to call a recursive function in the C language?"},"content":{"rendered":"<p>In C language, recursive functions can achieve recursion by calling themselves within the function. When calling a recursive function, it is important to keep the following points in mind:<\/p>\n<ol>\n<li>Defining the termination condition of recursion is crucial to prevent the recursion from running indefinitely. This condition must be met for the recursion to stop and return a result within the recursive function.<\/li>\n<li>Handle the current layer logic before making the recursive call: Before making the recursive call, it may be necessary to first handle the logic of the current layer, such as calculations, assignments, etc.<\/li>\n<li>Passing parameters: When making a recursive call, it is necessary to pass parameters to the next level of the recursive function. Typically, the values of the parameters will change as they approach the termination condition.<\/li>\n<\/ol>\n<p>Here is an example of a recursive function that calculates factorial.<\/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_\">factorial<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">int<\/span> n)<\/span> {\r\n    <span class=\"hljs-comment\">\/\/ \u7ec8\u6b62\u6761\u4ef6<\/span>\r\n    <span class=\"hljs-keyword\">if<\/span> (n == <span class=\"hljs-number\">0<\/span>) {\r\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">1<\/span>;\r\n    }\r\n  \r\n    <span class=\"hljs-comment\">\/\/ \u5f53\u524d\u5c42\u903b\u8f91\u5904\u7406<\/span>\r\n    <span class=\"hljs-type\">int<\/span> result = n * factorial(n - <span class=\"hljs-number\">1<\/span>);\r\n  \r\n    <span class=\"hljs-keyword\">return<\/span> result;\r\n}\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 = <span class=\"hljs-number\">5<\/span>;\r\n    <span class=\"hljs-type\">int<\/span> result = factorial(n);\r\n  \r\n    <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"Factorial of %d is %d\\n\"<\/span>, n, result);\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, the recursive function &#8220;factorial&#8221; is used to calculate factorials. When n is equal to 0, the termination condition is met and 1 is returned. Otherwise, n is multiplied by factorial(n-1) to get the result. The &#8220;factorial&#8221; function is called in the main function, passing in the parameter 5 to calculate the factorial of 5 and print the result.<\/p>\n<p>When the program is executed, the output is: The factorial of 5 is 120.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, recursive functions can achieve recursion by calling themselves within the function. When calling a recursive function, it is important to keep the following points in mind: Defining the termination condition of recursion is crucial to prevent the recursion from running indefinitely. This condition must be met for the recursion to stop and [&hellip;]<\/p>\n","protected":false},"author":12,"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-19983","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 call a recursive function in the 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-call-a-recursive-function-in-the-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 call a recursive function in the C language?\" \/>\n<meta property=\"og:description\" content=\"In C language, recursive functions can achieve recursion by calling themselves within the function. 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