{"id":24138,"date":"2024-03-16T02:38:19","date_gmt":"2024-03-16T02:38:19","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/"},"modified":"2024-03-22T02:58:17","modified_gmt":"2024-03-22T02:58:17","slug":"what-is-the-implementation-method-of-random-numbers-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/","title":{"rendered":"What is the implementation method of random numbers in C++?"},"content":{"rendered":"<p>There are several common ways to implement random numbers in C++.<\/p>\n<ol>\n<li>Using the rand function from the C standard library:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;cstdlib&gt;<\/span> <span class=\"hljs-comment\">\/\/ \u5305\u542brand\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;ctime&gt;<\/span> <span class=\"hljs-comment\">\/\/ \u5305\u542btime\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n   <span class=\"hljs-comment\">\/\/ \u521d\u59cb\u5316\u968f\u673a\u6570\u79cd\u5b50<\/span>\r\n   <span class=\"hljs-built_in\">srand<\/span>(<span class=\"hljs-built_in\">time<\/span>(<span class=\"hljs-literal\">NULL<\/span>));\r\n   \r\n   <span class=\"hljs-comment\">\/\/ \u751f\u6210\u968f\u673a\u6570<\/span>\r\n   <span class=\"hljs-type\">int<\/span> randomNum = <span class=\"hljs-built_in\">rand<\/span>();\r\n   \r\n   <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Using the random number engine and distribution functions from the C++ standard library:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;random&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n   std::random_device rd; <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u4e00\u4e2a\u968f\u673a\u6570\u79cd\u5b50<\/span>\r\n   <span class=\"hljs-function\">std::mt19937 <span class=\"hljs-title\">gen<\/span><span class=\"hljs-params\">(rd())<\/span><\/span>; <span class=\"hljs-comment\">\/\/ \u4f7f\u7528\u968f\u673a\u6570\u79cd\u5b50\u521d\u59cb\u5316\u968f\u673a\u6570\u5f15\u64ce<\/span>\r\n   std::uniform_int_distribution&lt;&gt; <span class=\"hljs-built_in\">dis<\/span>(<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">100<\/span>); <span class=\"hljs-comment\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u5747\u5300\u5206\u5e03\u7684\u6574\u6570\u5206\u5e03\u51fd\u6570\uff0c\u8303\u56f4\u662f1\u5230100<\/span>\r\n   \r\n   <span class=\"hljs-type\">int<\/span> randomNum = <span class=\"hljs-built_in\">dis<\/span>(gen); <span class=\"hljs-comment\">\/\/ \u751f\u6210\u968f\u673a\u6570<\/span>\r\n   \r\n   <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Utilize a third-party library, such as the Boost library&#8217;s random number generator.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;boost\/random\/mersenne_twister.hpp&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;boost\/random\/uniform_int_distribution.hpp&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n   boost::random::mt19937 gen; <span class=\"hljs-comment\">\/\/ \u4f7f\u7528mt19937\u5f15\u64ce<\/span>\r\n   boost::random::uniform_int_distribution&lt;&gt; <span class=\"hljs-built_in\">dis<\/span>(<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">100<\/span>); <span class=\"hljs-comment\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u5747\u5300\u5206\u5e03\u7684\u6574\u6570\u5206\u5e03\u51fd\u6570\uff0c\u8303\u56f4\u662f1\u5230100<\/span>\r\n   \r\n   <span class=\"hljs-type\">int<\/span> randomNum = <span class=\"hljs-built_in\">dis<\/span>(gen); <span class=\"hljs-comment\">\/\/ \u751f\u6210\u968f\u673a\u6570<\/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>These methods can all be used to generate random numbers, the choice of which method to use depends on the specific needs and use cases.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are several common ways to implement random numbers in C++. Using the rand function from the C standard library: #include &lt;cstdlib&gt; \/\/ \u5305\u542brand\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6 #include &lt;ctime&gt; \/\/ \u5305\u542btime\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6 int main() { \/\/ \u521d\u59cb\u5316\u968f\u673a\u6570\u79cd\u5b50 srand(time(NULL)); \/\/ \u751f\u6210\u968f\u673a\u6570 int randomNum = rand(); return 0; } Using the random number engine and distribution functions from the C++ standard [&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-24138","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>What is the implementation method of random numbers in C++? - 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\/what-is-the-implementation-method-of-random-numbers-in-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the implementation method of random numbers in C++?\" \/>\n<meta property=\"og:description\" content=\"There are several common ways to implement random numbers in C++. Using the rand function from the C standard library: #include &lt;cstdlib&gt; \/\/ \u5305\u542brand\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6 #include &lt;ctime&gt; \/\/ \u5305\u542btime\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6 int main() { \/\/ \u521d\u59cb\u5316\u968f\u673a\u6570\u79cd\u5b50 srand(time(NULL)); \/\/ \u751f\u6210\u968f\u673a\u6570 int randomNum = rand(); return 0; } Using the random number engine and distribution functions from the C++ standard [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/\" \/>\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=\"2024-03-16T02:38:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T02:58:17+00:00\" \/>\n<meta name=\"author\" content=\"Liam\" \/>\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=\"Liam\" \/>\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-is-the-implementation-method-of-random-numbers-in-c\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/\"},\"author\":{\"name\":\"Liam\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/23786905eb7b377f45ddb01c17da7671\"},\"headline\":\"What is the implementation method of random numbers in C++?\",\"datePublished\":\"2024-03-16T02:38:19+00:00\",\"dateModified\":\"2024-03-22T02:58:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/\"},\"wordCount\":81,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/\",\"name\":\"What is the implementation method of random numbers in C++? 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- Blog - Silicon Cloud","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:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/","og_locale":"en_US","og_type":"article","og_title":"What is the implementation method of random numbers in C++?","og_description":"There are several common ways to implement random numbers in C++. Using the rand function from the C standard library: #include &lt;cstdlib&gt; \/\/ \u5305\u542brand\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6 #include &lt;ctime&gt; \/\/ \u5305\u542btime\u51fd\u6570\u6240\u5728\u7684\u5934\u6587\u4ef6 int main() { \/\/ \u521d\u59cb\u5316\u968f\u673a\u6570\u79cd\u5b50 srand(time(NULL)); \/\/ \u751f\u6210\u968f\u673a\u6570 int randomNum = rand(); return 0; } Using the random number engine and distribution functions from the C++ standard [&hellip;]","og_url":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/","og_site_name":"Blog - Silicon Cloud","article_publisher":"https:\/\/www.facebook.com\/SiliCloudGlobal\/","article_published_time":"2024-03-16T02:38:19+00:00","article_modified_time":"2024-03-22T02:58:17+00:00","author":"Liam","twitter_card":"summary_large_image","twitter_creator":"@SiliCloudGlobal","twitter_site":"@SiliCloudGlobal","twitter_misc":{"Written by":"Liam","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/#article","isPartOf":{"@id":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/"},"author":{"name":"Liam","@id":"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/23786905eb7b377f45ddb01c17da7671"},"headline":"What is the implementation method of random numbers in C++?","datePublished":"2024-03-16T02:38:19+00:00","dateModified":"2024-03-22T02:58:17+00:00","mainEntityOfPage":{"@id":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/"},"wordCount":81,"commentCount":0,"publisher":{"@id":"https:\/\/www.silicloud.com\/blog\/#organization"},"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/","url":"https:\/\/www.silicloud.com\/blog\/what-is-the-implementation-method-of-random-numbers-in-c\/","name":"What is the implementation method of random numbers in C++? 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