{"id":12224,"date":"2024-03-14T15:24:20","date_gmt":"2024-03-14T15:24:20","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations\/"},"modified":"2025-08-04T22:58:16","modified_gmt":"2025-08-04T22:58:16","slug":"what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations\/","title":{"rendered":"C Random Number Generation: rand() &#038; srand()"},"content":{"rendered":"<p>In C language, you can generate random numbers using the rand() function. This function is defined in the stdlib.h header file with the following prototype:<\/p>\n<p>Generate a random number.<\/p>\n<p>Furthermore, you can also use the srand() function to set the seed for random numbers, ensuring that each generated random number sequence is different every time. This function is also defined in the stdlib.h header file, with the following prototype:<\/p>\n<p>Initialize the random number generator with a specified seed.<\/p>\n<p>It is important to note that the random numbers generated by the rand() function are pseudo-random and their sequence can be repeated. For higher quality random numbers, consider using the random number generation functions provided by the operating system.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, you can generate random numbers using the rand() function. This function is defined in the stdlib.h header file with the following prototype: Generate a random number. Furthermore, you can also use the srand() function to set the seed for random numbers, ensuring that each generated random number sequence is different every time. [&hellip;]<\/p>\n","protected":false},"author":7,"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":[381,5033,7134,15959,15960],"class_list":["post-12224","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-programming","tag-rand-function","tag-random-numbers","tag-srand-function","tag-stdlib-h"],"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 Random Number Generation: rand() &amp; srand() - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn to generate random numbers in C using rand() and srand() functions with seeding for unique sequences.\" \/>\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\/what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C Random Number Generation: rand() &amp; srand()\" \/>\n<meta property=\"og:description\" content=\"Learn to generate random numbers in C using rand() and srand() functions with seeding for unique sequences.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-14T15:24:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-04T22:58:16+00:00\" \/>\n<meta name=\"author\" content=\"Sophia Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sophia Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-function-can-be-called-in-c-language-to-perform-random-read-and-write-operations\/\"},\"author\":{\"name\":\"Sophia Anderson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\"},\"headline\":\"C Random Number Generation: rand() &#038; 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