{"id":129487,"date":"2023-11-29T16:01:23","date_gmt":"2023-11-29T10:31:23","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=129487"},"modified":"2023-11-29T16:01:23","modified_gmt":"2023-11-29T10:31:23","slug":"c-program-to-write-custom-functions","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/c-program-to-write-custom-functions\/","title":{"rendered":"C Program to Write Custom Functions"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include&lt;stdio.h&gt;\r\n#include&lt;conio.h&gt;\r\nvoid display();  \r\nvoid fact();   \/\/ Declare\r\nvoid main()\r\n{\r\n   printf(\"\\n Main Starts...\");\r\n    display();\r\n    fact();  \/\/ Calling\r\n   printf(\"\\n Main Ends...\");\r\n}\r\nvoid fact()  \/\/Defination \r\n{\r\n    int f=1,n;\r\n    printf(\"\\nEnter a Number\");\r\n    scanf(\"%d\",&amp;n);\r\n    while(n!=0)\r\n    {\r\n        f=f*n;\r\n        n--;\r\n    }\r\n    printf(\"\\nFactoiral is %d: \",f);\r\n\r\n}\r\nvoid display()\r\n{\r\n    printf(\"\\nThis is demo function in C Language\");\r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 #include&lt;stdio.h&gt; #include&lt;conio.h&gt; void display(); void fact(); \/\/ Declare void main() { printf(&#8220;\\n Main Starts&#8230;&#8221;); display(); fact(); \/\/ Calling printf(&#8220;\\n Main Ends&#8230;&#8221;); } void fact() \/\/Defination { int f=1,n; printf(&#8220;\\nEnter a Number&#8221;); scanf(&#8220;%d&#8221;,&amp;n);&#46;&#46;&#46;<\/p>\n","protected":false},"author":86671,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19488],"tags":[29544,29542,2263,29219,29218,29543],"class_list":["post-129487","post","type-post","status-publish","format-standard","hentry","category-c-programming","tag-c-custom-functions","tag-c-program-to-write-custom-functions","tag-c","tag-c-practical","tag-c-program","tag-write-custom-functions-in-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C Program to Write Custom Functions - DataFlair<\/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:\/\/data-flair.training\/blogs\/c-program-to-write-custom-functions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C Program to Write Custom Functions - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 #include&lt;stdio.h&gt; #include&lt;conio.h&gt; void display(); void fact(); \/\/ Declare void main() { printf(&quot;n Main Starts...&quot;); display(); fact(); \/\/ Calling printf(&quot;n Main Ends...&quot;); } void fact() \/\/Defination { int f=1,n; printf(&quot;nEnter a Number&quot;); scanf(&quot;%d&quot;,&amp;n);&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/c-program-to-write-custom-functions\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-29T10:31:23+00:00\" \/>\n<meta name=\"author\" content=\"TechVidvan Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"TechVidvan Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"C Program to Write Custom Functions - DataFlair","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/data-flair.training\/blogs\/c-program-to-write-custom-functions\/","og_locale":"en_US","og_type":"article","og_title":"C Program to Write Custom Functions - DataFlair","og_description":"Program 1 #include&lt;stdio.h&gt; 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