{"id":19461,"date":"2024-03-15T18:56:06","date_gmt":"2024-03-15T18:56:06","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-write-code-for-generating-random-numbers-in-the-c-language\/"},"modified":"2024-03-21T15:45:25","modified_gmt":"2024-03-21T15:45:25","slug":"how-to-write-code-for-generating-random-numbers-in-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-write-code-for-generating-random-numbers-in-the-c-language\/","title":{"rendered":"How to write code for generating random numbers in the C language?"},"content":{"rendered":"<p>In C language, the rand() function can be used to generate random numbers. This function will return a random integer ranging from 0 to RAND_MAX. To generate random numbers within a specific range, you can use the modulus operator to perform a modulus operation on the return value of the rand() function.<\/p>\n<p>Here is an example code that generates random numbers within a specified range:<\/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<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;stdlib.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;time.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> lower = <span class=\"hljs-number\">1<\/span>, upper = <span class=\"hljs-number\">100<\/span>, count = <span class=\"hljs-number\">5<\/span>;\r\n\r\n   <span class=\"hljs-comment\">\/\/ \u4f7f\u7528\u5f53\u524d\u65f6\u95f4\u4f5c\u4e3a\u968f\u673a\u6570\u79cd\u5b50<\/span>\r\n   srand(time(<span class=\"hljs-number\">0<\/span>));\r\n\r\n   <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\u968f\u673a\u6570\uff1a\"<\/span>);\r\n   <span class=\"hljs-keyword\">for<\/span>(<span class=\"hljs-type\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; count; i++) {\r\n      <span class=\"hljs-type\">int<\/span> num = (rand() % (upper - lower + <span class=\"hljs-number\">1<\/span>)) + lower;\r\n      <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"%d \"<\/span>, num);\r\n   }\r\n   <span class=\"hljs-built_in\">printf<\/span>(<span class=\"hljs-string\">\"\\n\"<\/span>);\r\n   \r\n   <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>The above code will generate five random numbers between 1 and 100 and print them out.<\/p>\n<p>Before using the rand() function, it is necessary to first use the srand() function to set a random number seed. Here, the time(0) function is used to obtain the current time as the seed, to ensure that a different random number sequence is generated each time the program is run.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C language, the rand() function can be used to generate random numbers. This function will return a random integer ranging from 0 to RAND_MAX. To generate random numbers within a specific range, you can use the modulus operator to perform a modulus operation on the return value of the rand() function. Here is an [&hellip;]<\/p>\n","protected":false},"author":6,"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-19461","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 write code for generating random numbers 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-write-code-for-generating-random-numbers-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 write code for generating random numbers in the C language?\" \/>\n<meta property=\"og:description\" content=\"In C language, the rand() function can be used to generate random numbers. 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